diff --git a/.config/redis.config.php b/.config/redis.config.php
index 346457c5..a5b13da6 100644
--- a/.config/redis.config.php
+++ b/.config/redis.config.php
@@ -5,7 +5,7 @@ if (getenv('REDIS_HOST')) {
     'memcache.locking' => '\OC\Memcache\Redis',
     'redis' => array(
       'host' => getenv('REDIS_HOST'),
-      'password' => getenv('REDIS_HOST_PASSWORD_FILE') && file_exists(getenv('REDIS_HOST_PASSWORD_FILE')) ? trim(file_get_contents(getenv('REDIS_HOST_PASSWORD_FILE'))) : (string) getenv('REDIS_HOST_PASSWORD'),
+      'password' => getenv('REDIS_HOST_PASSWORD_FILE') ? trim(file_get_contents(getenv('REDIS_HOST_PASSWORD_FILE'))) : (string) getenv('REDIS_HOST_PASSWORD'),
     ),
   );
 
diff --git a/.config/s3.config.php b/.config/s3.config.php
index 374cba2d..9941c562 100644
--- a/.config/s3.config.php
+++ b/.config/s3.config.php
@@ -24,7 +24,7 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
     )
   );
 
-  if (getenv('OBJECTSTORE_S3_KEY_FILE') && file_exists(getenv('OBJECTSTORE_S3_KEY_FILE'))) {
+  if (getenv('OBJECTSTORE_S3_KEY_FILE')) {
     $CONFIG['objectstore']['arguments']['key'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_KEY_FILE')));
   } elseif (getenv('OBJECTSTORE_S3_KEY')) {
     $CONFIG['objectstore']['arguments']['key'] = getenv('OBJECTSTORE_S3_KEY');
@@ -32,7 +32,7 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
     $CONFIG['objectstore']['arguments']['key'] = '';
   }
 
-  if (getenv('OBJECTSTORE_S3_SECRET_FILE') && file_exists(getenv('OBJECTSTORE_S3_SECRET_FILE'))) {
+  if (getenv('OBJECTSTORE_S3_SECRET_FILE')) {
     $CONFIG['objectstore']['arguments']['secret'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_SECRET_FILE')));
   } elseif (getenv('OBJECTSTORE_S3_SECRET')) {
     $CONFIG['objectstore']['arguments']['secret'] = getenv('OBJECTSTORE_S3_SECRET');
@@ -40,7 +40,7 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
     $CONFIG['objectstore']['arguments']['secret'] = '';
   }
 
-  if (getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE') && file_exists(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE'))) {
+  if (getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE')) {
     $CONFIG['objectstore']['arguments']['sse_c_key'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE')));
   } elseif (getenv('OBJECTSTORE_S3_SSE_C_KEY')) {
     $CONFIG['objectstore']['arguments']['sse_c_key'] = getenv('OBJECTSTORE_S3_SSE_C_KEY');
diff --git a/.config/smtp.config.php b/.config/smtp.config.php
index 5006fe47..66a2ef7e 100644
--- a/.config/smtp.config.php
+++ b/.config/smtp.config.php
@@ -5,14 +5,14 @@ if (getenv('SMTP_HOST') && getenv('MAIL_FROM_ADDRESS') && getenv('MAIL_DOMAIN'))
     'mail_smtphost' => getenv('SMTP_HOST'),
     'mail_smtpport' => getenv('SMTP_PORT') ?: (getenv('SMTP_SECURE') ? 465 : 25),
     'mail_smtpsecure' => getenv('SMTP_SECURE') ?: '',
-    'mail_smtpauth' => getenv('SMTP_NAME') && (getenv('SMTP_PASSWORD') || (getenv('SMTP_PASSWORD_FILE') && file_exists(getenv('SMTP_PASSWORD_FILE')))),
+    'mail_smtpauth' => getenv('SMTP_NAME') && (getenv('SMTP_PASSWORD') || getenv('SMTP_PASSWORD_FILE')),
     'mail_smtpauthtype' => getenv('SMTP_AUTHTYPE') ?: 'LOGIN',
     'mail_smtpname' => getenv('SMTP_NAME') ?: '',
     'mail_from_address' => getenv('MAIL_FROM_ADDRESS'),
     'mail_domain' => getenv('MAIL_DOMAIN'),
   );
 
-  if (getenv('SMTP_PASSWORD_FILE') && file_exists(getenv('SMTP_PASSWORD_FILE'))) {
+  if (getenv('SMTP_PASSWORD_FILE')) {
       $CONFIG['mail_smtppassword'] = trim(file_get_contents(getenv('SMTP_PASSWORD_FILE')));
   } elseif (getenv('SMTP_PASSWORD')) {
       $CONFIG['mail_smtppassword'] = getenv('SMTP_PASSWORD');
diff --git a/27/apache/config/redis.config.php b/27/apache/config/redis.config.php
index 346457c5..a5b13da6 100644
--- a/27/apache/config/redis.config.php
+++ b/27/apache/config/redis.config.php
@@ -5,7 +5,7 @@ if (getenv('REDIS_HOST')) {
     'memcache.locking' => '\OC\Memcache\Redis',
     'redis' => array(
       'host' => getenv('REDIS_HOST'),
-      'password' => getenv('REDIS_HOST_PASSWORD_FILE') && file_exists(getenv('REDIS_HOST_PASSWORD_FILE')) ? trim(file_get_contents(getenv('REDIS_HOST_PASSWORD_FILE'))) : (string) getenv('REDIS_HOST_PASSWORD'),
+      'password' => getenv('REDIS_HOST_PASSWORD_FILE') ? trim(file_get_contents(getenv('REDIS_HOST_PASSWORD_FILE'))) : (string) getenv('REDIS_HOST_PASSWORD'),
     ),
   );
 
diff --git a/27/apache/config/s3.config.php b/27/apache/config/s3.config.php
index 374cba2d..9941c562 100644
--- a/27/apache/config/s3.config.php
+++ b/27/apache/config/s3.config.php
@@ -24,7 +24,7 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
     )
   );
 
-  if (getenv('OBJECTSTORE_S3_KEY_FILE') && file_exists(getenv('OBJECTSTORE_S3_KEY_FILE'))) {
+  if (getenv('OBJECTSTORE_S3_KEY_FILE')) {
     $CONFIG['objectstore']['arguments']['key'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_KEY_FILE')));
   } elseif (getenv('OBJECTSTORE_S3_KEY')) {
     $CONFIG['objectstore']['arguments']['key'] = getenv('OBJECTSTORE_S3_KEY');
@@ -32,7 +32,7 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
     $CONFIG['objectstore']['arguments']['key'] = '';
   }
 
-  if (getenv('OBJECTSTORE_S3_SECRET_FILE') && file_exists(getenv('OBJECTSTORE_S3_SECRET_FILE'))) {
+  if (getenv('OBJECTSTORE_S3_SECRET_FILE')) {
     $CONFIG['objectstore']['arguments']['secret'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_SECRET_FILE')));
   } elseif (getenv('OBJECTSTORE_S3_SECRET')) {
     $CONFIG['objectstore']['arguments']['secret'] = getenv('OBJECTSTORE_S3_SECRET');
@@ -40,7 +40,7 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
     $CONFIG['objectstore']['arguments']['secret'] = '';
   }
 
-  if (getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE') && file_exists(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE'))) {
+  if (getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE')) {
     $CONFIG['objectstore']['arguments']['sse_c_key'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE')));
   } elseif (getenv('OBJECTSTORE_S3_SSE_C_KEY')) {
     $CONFIG['objectstore']['arguments']['sse_c_key'] = getenv('OBJECTSTORE_S3_SSE_C_KEY');
diff --git a/27/apache/config/smtp.config.php b/27/apache/config/smtp.config.php
index 5006fe47..66a2ef7e 100644
--- a/27/apache/config/smtp.config.php
+++ b/27/apache/config/smtp.config.php
@@ -5,14 +5,14 @@ if (getenv('SMTP_HOST') && getenv('MAIL_FROM_ADDRESS') && getenv('MAIL_DOMAIN'))
     'mail_smtphost' => getenv('SMTP_HOST'),
     'mail_smtpport' => getenv('SMTP_PORT') ?: (getenv('SMTP_SECURE') ? 465 : 25),
     'mail_smtpsecure' => getenv('SMTP_SECURE') ?: '',
-    'mail_smtpauth' => getenv('SMTP_NAME') && (getenv('SMTP_PASSWORD') || (getenv('SMTP_PASSWORD_FILE') && file_exists(getenv('SMTP_PASSWORD_FILE')))),
+    'mail_smtpauth' => getenv('SMTP_NAME') && (getenv('SMTP_PASSWORD') || getenv('SMTP_PASSWORD_FILE')),
     'mail_smtpauthtype' => getenv('SMTP_AUTHTYPE') ?: 'LOGIN',
     'mail_smtpname' => getenv('SMTP_NAME') ?: '',
     'mail_from_address' => getenv('MAIL_FROM_ADDRESS'),
     'mail_domain' => getenv('MAIL_DOMAIN'),
   );
 
-  if (getenv('SMTP_PASSWORD_FILE') && file_exists(getenv('SMTP_PASSWORD_FILE'))) {
+  if (getenv('SMTP_PASSWORD_FILE')) {
       $CONFIG['mail_smtppassword'] = trim(file_get_contents(getenv('SMTP_PASSWORD_FILE')));
   } elseif (getenv('SMTP_PASSWORD')) {
       $CONFIG['mail_smtppassword'] = getenv('SMTP_PASSWORD');
diff --git a/27/fpm-alpine/config/redis.config.php b/27/fpm-alpine/config/redis.config.php
index 346457c5..a5b13da6 100644
--- a/27/fpm-alpine/config/redis.config.php
+++ b/27/fpm-alpine/config/redis.config.php
@@ -5,7 +5,7 @@ if (getenv('REDIS_HOST')) {
     'memcache.locking' => '\OC\Memcache\Redis',
     'redis' => array(
       'host' => getenv('REDIS_HOST'),
-      'password' => getenv('REDIS_HOST_PASSWORD_FILE') && file_exists(getenv('REDIS_HOST_PASSWORD_FILE')) ? trim(file_get_contents(getenv('REDIS_HOST_PASSWORD_FILE'))) : (string) getenv('REDIS_HOST_PASSWORD'),
+      'password' => getenv('REDIS_HOST_PASSWORD_FILE') ? trim(file_get_contents(getenv('REDIS_HOST_PASSWORD_FILE'))) : (string) getenv('REDIS_HOST_PASSWORD'),
     ),
   );
 
diff --git a/27/fpm-alpine/config/s3.config.php b/27/fpm-alpine/config/s3.config.php
index 374cba2d..9941c562 100644
--- a/27/fpm-alpine/config/s3.config.php
+++ b/27/fpm-alpine/config/s3.config.php
@@ -24,7 +24,7 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
     )
   );
 
-  if (getenv('OBJECTSTORE_S3_KEY_FILE') && file_exists(getenv('OBJECTSTORE_S3_KEY_FILE'))) {
+  if (getenv('OBJECTSTORE_S3_KEY_FILE')) {
     $CONFIG['objectstore']['arguments']['key'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_KEY_FILE')));
   } elseif (getenv('OBJECTSTORE_S3_KEY')) {
     $CONFIG['objectstore']['arguments']['key'] = getenv('OBJECTSTORE_S3_KEY');
@@ -32,7 +32,7 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
     $CONFIG['objectstore']['arguments']['key'] = '';
   }
 
-  if (getenv('OBJECTSTORE_S3_SECRET_FILE') && file_exists(getenv('OBJECTSTORE_S3_SECRET_FILE'))) {
+  if (getenv('OBJECTSTORE_S3_SECRET_FILE')) {
     $CONFIG['objectstore']['arguments']['secret'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_SECRET_FILE')));
   } elseif (getenv('OBJECTSTORE_S3_SECRET')) {
     $CONFIG['objectstore']['arguments']['secret'] = getenv('OBJECTSTORE_S3_SECRET');
@@ -40,7 +40,7 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
     $CONFIG['objectstore']['arguments']['secret'] = '';
   }
 
-  if (getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE') && file_exists(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE'))) {
+  if (getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE')) {
     $CONFIG['objectstore']['arguments']['sse_c_key'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE')));
   } elseif (getenv('OBJECTSTORE_S3_SSE_C_KEY')) {
     $CONFIG['objectstore']['arguments']['sse_c_key'] = getenv('OBJECTSTORE_S3_SSE_C_KEY');
diff --git a/27/fpm-alpine/config/smtp.config.php b/27/fpm-alpine/config/smtp.config.php
index 5006fe47..66a2ef7e 100644
--- a/27/fpm-alpine/config/smtp.config.php
+++ b/27/fpm-alpine/config/smtp.config.php
@@ -5,14 +5,14 @@ if (getenv('SMTP_HOST') && getenv('MAIL_FROM_ADDRESS') && getenv('MAIL_DOMAIN'))
     'mail_smtphost' => getenv('SMTP_HOST'),
     'mail_smtpport' => getenv('SMTP_PORT') ?: (getenv('SMTP_SECURE') ? 465 : 25),
     'mail_smtpsecure' => getenv('SMTP_SECURE') ?: '',
-    'mail_smtpauth' => getenv('SMTP_NAME') && (getenv('SMTP_PASSWORD') || (getenv('SMTP_PASSWORD_FILE') && file_exists(getenv('SMTP_PASSWORD_FILE')))),
+    'mail_smtpauth' => getenv('SMTP_NAME') && (getenv('SMTP_PASSWORD') || getenv('SMTP_PASSWORD_FILE')),
     'mail_smtpauthtype' => getenv('SMTP_AUTHTYPE') ?: 'LOGIN',
     'mail_smtpname' => getenv('SMTP_NAME') ?: '',
     'mail_from_address' => getenv('MAIL_FROM_ADDRESS'),
     'mail_domain' => getenv('MAIL_DOMAIN'),
   );
 
-  if (getenv('SMTP_PASSWORD_FILE') && file_exists(getenv('SMTP_PASSWORD_FILE'))) {
+  if (getenv('SMTP_PASSWORD_FILE')) {
       $CONFIG['mail_smtppassword'] = trim(file_get_contents(getenv('SMTP_PASSWORD_FILE')));
   } elseif (getenv('SMTP_PASSWORD')) {
       $CONFIG['mail_smtppassword'] = getenv('SMTP_PASSWORD');
diff --git a/27/fpm/config/redis.config.php b/27/fpm/config/redis.config.php
index 346457c5..a5b13da6 100644
--- a/27/fpm/config/redis.config.php
+++ b/27/fpm/config/redis.config.php
@@ -5,7 +5,7 @@ if (getenv('REDIS_HOST')) {
     'memcache.locking' => '\OC\Memcache\Redis',
     'redis' => array(
       'host' => getenv('REDIS_HOST'),
-      'password' => getenv('REDIS_HOST_PASSWORD_FILE') && file_exists(getenv('REDIS_HOST_PASSWORD_FILE')) ? trim(file_get_contents(getenv('REDIS_HOST_PASSWORD_FILE'))) : (string) getenv('REDIS_HOST_PASSWORD'),
+      'password' => getenv('REDIS_HOST_PASSWORD_FILE') ? trim(file_get_contents(getenv('REDIS_HOST_PASSWORD_FILE'))) : (string) getenv('REDIS_HOST_PASSWORD'),
     ),
   );
 
diff --git a/27/fpm/config/s3.config.php b/27/fpm/config/s3.config.php
index 374cba2d..9941c562 100644
--- a/27/fpm/config/s3.config.php
+++ b/27/fpm/config/s3.config.php
@@ -24,7 +24,7 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
     )
   );
 
-  if (getenv('OBJECTSTORE_S3_KEY_FILE') && file_exists(getenv('OBJECTSTORE_S3_KEY_FILE'))) {
+  if (getenv('OBJECTSTORE_S3_KEY_FILE')) {
     $CONFIG['objectstore']['arguments']['key'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_KEY_FILE')));
   } elseif (getenv('OBJECTSTORE_S3_KEY')) {
     $CONFIG['objectstore']['arguments']['key'] = getenv('OBJECTSTORE_S3_KEY');
@@ -32,7 +32,7 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
     $CONFIG['objectstore']['arguments']['key'] = '';
   }
 
-  if (getenv('OBJECTSTORE_S3_SECRET_FILE') && file_exists(getenv('OBJECTSTORE_S3_SECRET_FILE'))) {
+  if (getenv('OBJECTSTORE_S3_SECRET_FILE')) {
     $CONFIG['objectstore']['arguments']['secret'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_SECRET_FILE')));
   } elseif (getenv('OBJECTSTORE_S3_SECRET')) {
     $CONFIG['objectstore']['arguments']['secret'] = getenv('OBJECTSTORE_S3_SECRET');
@@ -40,7 +40,7 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
     $CONFIG['objectstore']['arguments']['secret'] = '';
   }
 
-  if (getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE') && file_exists(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE'))) {
+  if (getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE')) {
     $CONFIG['objectstore']['arguments']['sse_c_key'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE')));
   } elseif (getenv('OBJECTSTORE_S3_SSE_C_KEY')) {
     $CONFIG['objectstore']['arguments']['sse_c_key'] = getenv('OBJECTSTORE_S3_SSE_C_KEY');
diff --git a/27/fpm/config/smtp.config.php b/27/fpm/config/smtp.config.php
index 5006fe47..66a2ef7e 100644
--- a/27/fpm/config/smtp.config.php
+++ b/27/fpm/config/smtp.config.php
@@ -5,14 +5,14 @@ if (getenv('SMTP_HOST') && getenv('MAIL_FROM_ADDRESS') && getenv('MAIL_DOMAIN'))
     'mail_smtphost' => getenv('SMTP_HOST'),
     'mail_smtpport' => getenv('SMTP_PORT') ?: (getenv('SMTP_SECURE') ? 465 : 25),
     'mail_smtpsecure' => getenv('SMTP_SECURE') ?: '',
-    'mail_smtpauth' => getenv('SMTP_NAME') && (getenv('SMTP_PASSWORD') || (getenv('SMTP_PASSWORD_FILE') && file_exists(getenv('SMTP_PASSWORD_FILE')))),
+    'mail_smtpauth' => getenv('SMTP_NAME') && (getenv('SMTP_PASSWORD') || getenv('SMTP_PASSWORD_FILE')),
     'mail_smtpauthtype' => getenv('SMTP_AUTHTYPE') ?: 'LOGIN',
     'mail_smtpname' => getenv('SMTP_NAME') ?: '',
     'mail_from_address' => getenv('MAIL_FROM_ADDRESS'),
     'mail_domain' => getenv('MAIL_DOMAIN'),
   );
 
-  if (getenv('SMTP_PASSWORD_FILE') && file_exists(getenv('SMTP_PASSWORD_FILE'))) {
+  if (getenv('SMTP_PASSWORD_FILE')) {
       $CONFIG['mail_smtppassword'] = trim(file_get_contents(getenv('SMTP_PASSWORD_FILE')));
   } elseif (getenv('SMTP_PASSWORD')) {
       $CONFIG['mail_smtppassword'] = getenv('SMTP_PASSWORD');
diff --git a/28/apache/config/redis.config.php b/28/apache/config/redis.config.php
index 346457c5..a5b13da6 100644
--- a/28/apache/config/redis.config.php
+++ b/28/apache/config/redis.config.php
@@ -5,7 +5,7 @@ if (getenv('REDIS_HOST')) {
     'memcache.locking' => '\OC\Memcache\Redis',
     'redis' => array(
       'host' => getenv('REDIS_HOST'),
-      'password' => getenv('REDIS_HOST_PASSWORD_FILE') && file_exists(getenv('REDIS_HOST_PASSWORD_FILE')) ? trim(file_get_contents(getenv('REDIS_HOST_PASSWORD_FILE'))) : (string) getenv('REDIS_HOST_PASSWORD'),
+      'password' => getenv('REDIS_HOST_PASSWORD_FILE') ? trim(file_get_contents(getenv('REDIS_HOST_PASSWORD_FILE'))) : (string) getenv('REDIS_HOST_PASSWORD'),
     ),
   );
 
diff --git a/28/apache/config/s3.config.php b/28/apache/config/s3.config.php
index 374cba2d..9941c562 100644
--- a/28/apache/config/s3.config.php
+++ b/28/apache/config/s3.config.php
@@ -24,7 +24,7 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
     )
   );
 
-  if (getenv('OBJECTSTORE_S3_KEY_FILE') && file_exists(getenv('OBJECTSTORE_S3_KEY_FILE'))) {
+  if (getenv('OBJECTSTORE_S3_KEY_FILE')) {
     $CONFIG['objectstore']['arguments']['key'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_KEY_FILE')));
   } elseif (getenv('OBJECTSTORE_S3_KEY')) {
     $CONFIG['objectstore']['arguments']['key'] = getenv('OBJECTSTORE_S3_KEY');
@@ -32,7 +32,7 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
     $CONFIG['objectstore']['arguments']['key'] = '';
   }
 
-  if (getenv('OBJECTSTORE_S3_SECRET_FILE') && file_exists(getenv('OBJECTSTORE_S3_SECRET_FILE'))) {
+  if (getenv('OBJECTSTORE_S3_SECRET_FILE')) {
     $CONFIG['objectstore']['arguments']['secret'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_SECRET_FILE')));
   } elseif (getenv('OBJECTSTORE_S3_SECRET')) {
     $CONFIG['objectstore']['arguments']['secret'] = getenv('OBJECTSTORE_S3_SECRET');
@@ -40,7 +40,7 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
     $CONFIG['objectstore']['arguments']['secret'] = '';
   }
 
-  if (getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE') && file_exists(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE'))) {
+  if (getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE')) {
     $CONFIG['objectstore']['arguments']['sse_c_key'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE')));
   } elseif (getenv('OBJECTSTORE_S3_SSE_C_KEY')) {
     $CONFIG['objectstore']['arguments']['sse_c_key'] = getenv('OBJECTSTORE_S3_SSE_C_KEY');
diff --git a/28/apache/config/smtp.config.php b/28/apache/config/smtp.config.php
index 5006fe47..66a2ef7e 100644
--- a/28/apache/config/smtp.config.php
+++ b/28/apache/config/smtp.config.php
@@ -5,14 +5,14 @@ if (getenv('SMTP_HOST') && getenv('MAIL_FROM_ADDRESS') && getenv('MAIL_DOMAIN'))
     'mail_smtphost' => getenv('SMTP_HOST'),
     'mail_smtpport' => getenv('SMTP_PORT') ?: (getenv('SMTP_SECURE') ? 465 : 25),
     'mail_smtpsecure' => getenv('SMTP_SECURE') ?: '',
-    'mail_smtpauth' => getenv('SMTP_NAME') && (getenv('SMTP_PASSWORD') || (getenv('SMTP_PASSWORD_FILE') && file_exists(getenv('SMTP_PASSWORD_FILE')))),
+    'mail_smtpauth' => getenv('SMTP_NAME') && (getenv('SMTP_PASSWORD') || getenv('SMTP_PASSWORD_FILE')),
     'mail_smtpauthtype' => getenv('SMTP_AUTHTYPE') ?: 'LOGIN',
     'mail_smtpname' => getenv('SMTP_NAME') ?: '',
     'mail_from_address' => getenv('MAIL_FROM_ADDRESS'),
     'mail_domain' => getenv('MAIL_DOMAIN'),
   );
 
-  if (getenv('SMTP_PASSWORD_FILE') && file_exists(getenv('SMTP_PASSWORD_FILE'))) {
+  if (getenv('SMTP_PASSWORD_FILE')) {
       $CONFIG['mail_smtppassword'] = trim(file_get_contents(getenv('SMTP_PASSWORD_FILE')));
   } elseif (getenv('SMTP_PASSWORD')) {
       $CONFIG['mail_smtppassword'] = getenv('SMTP_PASSWORD');
diff --git a/28/fpm-alpine/config/redis.config.php b/28/fpm-alpine/config/redis.config.php
index 346457c5..a5b13da6 100644
--- a/28/fpm-alpine/config/redis.config.php
+++ b/28/fpm-alpine/config/redis.config.php
@@ -5,7 +5,7 @@ if (getenv('REDIS_HOST')) {
     'memcache.locking' => '\OC\Memcache\Redis',
     'redis' => array(
       'host' => getenv('REDIS_HOST'),
-      'password' => getenv('REDIS_HOST_PASSWORD_FILE') && file_exists(getenv('REDIS_HOST_PASSWORD_FILE')) ? trim(file_get_contents(getenv('REDIS_HOST_PASSWORD_FILE'))) : (string) getenv('REDIS_HOST_PASSWORD'),
+      'password' => getenv('REDIS_HOST_PASSWORD_FILE') ? trim(file_get_contents(getenv('REDIS_HOST_PASSWORD_FILE'))) : (string) getenv('REDIS_HOST_PASSWORD'),
     ),
   );
 
diff --git a/28/fpm-alpine/config/s3.config.php b/28/fpm-alpine/config/s3.config.php
index 374cba2d..9941c562 100644
--- a/28/fpm-alpine/config/s3.config.php
+++ b/28/fpm-alpine/config/s3.config.php
@@ -24,7 +24,7 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
     )
   );
 
-  if (getenv('OBJECTSTORE_S3_KEY_FILE') && file_exists(getenv('OBJECTSTORE_S3_KEY_FILE'))) {
+  if (getenv('OBJECTSTORE_S3_KEY_FILE')) {
     $CONFIG['objectstore']['arguments']['key'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_KEY_FILE')));
   } elseif (getenv('OBJECTSTORE_S3_KEY')) {
     $CONFIG['objectstore']['arguments']['key'] = getenv('OBJECTSTORE_S3_KEY');
@@ -32,7 +32,7 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
     $CONFIG['objectstore']['arguments']['key'] = '';
   }
 
-  if (getenv('OBJECTSTORE_S3_SECRET_FILE') && file_exists(getenv('OBJECTSTORE_S3_SECRET_FILE'))) {
+  if (getenv('OBJECTSTORE_S3_SECRET_FILE')) {
     $CONFIG['objectstore']['arguments']['secret'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_SECRET_FILE')));
   } elseif (getenv('OBJECTSTORE_S3_SECRET')) {
     $CONFIG['objectstore']['arguments']['secret'] = getenv('OBJECTSTORE_S3_SECRET');
@@ -40,7 +40,7 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
     $CONFIG['objectstore']['arguments']['secret'] = '';
   }
 
-  if (getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE') && file_exists(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE'))) {
+  if (getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE')) {
     $CONFIG['objectstore']['arguments']['sse_c_key'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE')));
   } elseif (getenv('OBJECTSTORE_S3_SSE_C_KEY')) {
     $CONFIG['objectstore']['arguments']['sse_c_key'] = getenv('OBJECTSTORE_S3_SSE_C_KEY');
diff --git a/28/fpm-alpine/config/smtp.config.php b/28/fpm-alpine/config/smtp.config.php
index 5006fe47..66a2ef7e 100644
--- a/28/fpm-alpine/config/smtp.config.php
+++ b/28/fpm-alpine/config/smtp.config.php
@@ -5,14 +5,14 @@ if (getenv('SMTP_HOST') && getenv('MAIL_FROM_ADDRESS') && getenv('MAIL_DOMAIN'))
     'mail_smtphost' => getenv('SMTP_HOST'),
     'mail_smtpport' => getenv('SMTP_PORT') ?: (getenv('SMTP_SECURE') ? 465 : 25),
     'mail_smtpsecure' => getenv('SMTP_SECURE') ?: '',
-    'mail_smtpauth' => getenv('SMTP_NAME') && (getenv('SMTP_PASSWORD') || (getenv('SMTP_PASSWORD_FILE') && file_exists(getenv('SMTP_PASSWORD_FILE')))),
+    'mail_smtpauth' => getenv('SMTP_NAME') && (getenv('SMTP_PASSWORD') || getenv('SMTP_PASSWORD_FILE')),
     'mail_smtpauthtype' => getenv('SMTP_AUTHTYPE') ?: 'LOGIN',
     'mail_smtpname' => getenv('SMTP_NAME') ?: '',
     'mail_from_address' => getenv('MAIL_FROM_ADDRESS'),
     'mail_domain' => getenv('MAIL_DOMAIN'),
   );
 
-  if (getenv('SMTP_PASSWORD_FILE') && file_exists(getenv('SMTP_PASSWORD_FILE'))) {
+  if (getenv('SMTP_PASSWORD_FILE')) {
       $CONFIG['mail_smtppassword'] = trim(file_get_contents(getenv('SMTP_PASSWORD_FILE')));
   } elseif (getenv('SMTP_PASSWORD')) {
       $CONFIG['mail_smtppassword'] = getenv('SMTP_PASSWORD');
diff --git a/28/fpm/config/redis.config.php b/28/fpm/config/redis.config.php
index 346457c5..a5b13da6 100644
--- a/28/fpm/config/redis.config.php
+++ b/28/fpm/config/redis.config.php
@@ -5,7 +5,7 @@ if (getenv('REDIS_HOST')) {
     'memcache.locking' => '\OC\Memcache\Redis',
     'redis' => array(
       'host' => getenv('REDIS_HOST'),
-      'password' => getenv('REDIS_HOST_PASSWORD_FILE') && file_exists(getenv('REDIS_HOST_PASSWORD_FILE')) ? trim(file_get_contents(getenv('REDIS_HOST_PASSWORD_FILE'))) : (string) getenv('REDIS_HOST_PASSWORD'),
+      'password' => getenv('REDIS_HOST_PASSWORD_FILE') ? trim(file_get_contents(getenv('REDIS_HOST_PASSWORD_FILE'))) : (string) getenv('REDIS_HOST_PASSWORD'),
     ),
   );
 
diff --git a/28/fpm/config/s3.config.php b/28/fpm/config/s3.config.php
index 374cba2d..9941c562 100644
--- a/28/fpm/config/s3.config.php
+++ b/28/fpm/config/s3.config.php
@@ -24,7 +24,7 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
     )
   );
 
-  if (getenv('OBJECTSTORE_S3_KEY_FILE') && file_exists(getenv('OBJECTSTORE_S3_KEY_FILE'))) {
+  if (getenv('OBJECTSTORE_S3_KEY_FILE')) {
     $CONFIG['objectstore']['arguments']['key'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_KEY_FILE')));
   } elseif (getenv('OBJECTSTORE_S3_KEY')) {
     $CONFIG['objectstore']['arguments']['key'] = getenv('OBJECTSTORE_S3_KEY');
@@ -32,7 +32,7 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
     $CONFIG['objectstore']['arguments']['key'] = '';
   }
 
-  if (getenv('OBJECTSTORE_S3_SECRET_FILE') && file_exists(getenv('OBJECTSTORE_S3_SECRET_FILE'))) {
+  if (getenv('OBJECTSTORE_S3_SECRET_FILE')) {
     $CONFIG['objectstore']['arguments']['secret'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_SECRET_FILE')));
   } elseif (getenv('OBJECTSTORE_S3_SECRET')) {
     $CONFIG['objectstore']['arguments']['secret'] = getenv('OBJECTSTORE_S3_SECRET');
@@ -40,7 +40,7 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
     $CONFIG['objectstore']['arguments']['secret'] = '';
   }
 
-  if (getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE') && file_exists(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE'))) {
+  if (getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE')) {
     $CONFIG['objectstore']['arguments']['sse_c_key'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE')));
   } elseif (getenv('OBJECTSTORE_S3_SSE_C_KEY')) {
     $CONFIG['objectstore']['arguments']['sse_c_key'] = getenv('OBJECTSTORE_S3_SSE_C_KEY');
diff --git a/28/fpm/config/smtp.config.php b/28/fpm/config/smtp.config.php
index 5006fe47..66a2ef7e 100644
--- a/28/fpm/config/smtp.config.php
+++ b/28/fpm/config/smtp.config.php
@@ -5,14 +5,14 @@ if (getenv('SMTP_HOST') && getenv('MAIL_FROM_ADDRESS') && getenv('MAIL_DOMAIN'))
     'mail_smtphost' => getenv('SMTP_HOST'),
     'mail_smtpport' => getenv('SMTP_PORT') ?: (getenv('SMTP_SECURE') ? 465 : 25),
     'mail_smtpsecure' => getenv('SMTP_SECURE') ?: '',
-    'mail_smtpauth' => getenv('SMTP_NAME') && (getenv('SMTP_PASSWORD') || (getenv('SMTP_PASSWORD_FILE') && file_exists(getenv('SMTP_PASSWORD_FILE')))),
+    'mail_smtpauth' => getenv('SMTP_NAME') && (getenv('SMTP_PASSWORD') || getenv('SMTP_PASSWORD_FILE')),
     'mail_smtpauthtype' => getenv('SMTP_AUTHTYPE') ?: 'LOGIN',
     'mail_smtpname' => getenv('SMTP_NAME') ?: '',
     'mail_from_address' => getenv('MAIL_FROM_ADDRESS'),
     'mail_domain' => getenv('MAIL_DOMAIN'),
   );
 
-  if (getenv('SMTP_PASSWORD_FILE') && file_exists(getenv('SMTP_PASSWORD_FILE'))) {
+  if (getenv('SMTP_PASSWORD_FILE')) {
       $CONFIG['mail_smtppassword'] = trim(file_get_contents(getenv('SMTP_PASSWORD_FILE')));
   } elseif (getenv('SMTP_PASSWORD')) {
       $CONFIG['mail_smtppassword'] = getenv('SMTP_PASSWORD');
diff --git a/29/apache/config/redis.config.php b/29/apache/config/redis.config.php
index 346457c5..a5b13da6 100644
--- a/29/apache/config/redis.config.php
+++ b/29/apache/config/redis.config.php
@@ -5,7 +5,7 @@ if (getenv('REDIS_HOST')) {
     'memcache.locking' => '\OC\Memcache\Redis',
     'redis' => array(
       'host' => getenv('REDIS_HOST'),
-      'password' => getenv('REDIS_HOST_PASSWORD_FILE') && file_exists(getenv('REDIS_HOST_PASSWORD_FILE')) ? trim(file_get_contents(getenv('REDIS_HOST_PASSWORD_FILE'))) : (string) getenv('REDIS_HOST_PASSWORD'),
+      'password' => getenv('REDIS_HOST_PASSWORD_FILE') ? trim(file_get_contents(getenv('REDIS_HOST_PASSWORD_FILE'))) : (string) getenv('REDIS_HOST_PASSWORD'),
     ),
   );
 
diff --git a/29/apache/config/s3.config.php b/29/apache/config/s3.config.php
index 374cba2d..9941c562 100644
--- a/29/apache/config/s3.config.php
+++ b/29/apache/config/s3.config.php
@@ -24,7 +24,7 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
     )
   );
 
-  if (getenv('OBJECTSTORE_S3_KEY_FILE') && file_exists(getenv('OBJECTSTORE_S3_KEY_FILE'))) {
+  if (getenv('OBJECTSTORE_S3_KEY_FILE')) {
     $CONFIG['objectstore']['arguments']['key'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_KEY_FILE')));
   } elseif (getenv('OBJECTSTORE_S3_KEY')) {
     $CONFIG['objectstore']['arguments']['key'] = getenv('OBJECTSTORE_S3_KEY');
@@ -32,7 +32,7 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
     $CONFIG['objectstore']['arguments']['key'] = '';
   }
 
-  if (getenv('OBJECTSTORE_S3_SECRET_FILE') && file_exists(getenv('OBJECTSTORE_S3_SECRET_FILE'))) {
+  if (getenv('OBJECTSTORE_S3_SECRET_FILE')) {
     $CONFIG['objectstore']['arguments']['secret'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_SECRET_FILE')));
   } elseif (getenv('OBJECTSTORE_S3_SECRET')) {
     $CONFIG['objectstore']['arguments']['secret'] = getenv('OBJECTSTORE_S3_SECRET');
@@ -40,7 +40,7 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
     $CONFIG['objectstore']['arguments']['secret'] = '';
   }
 
-  if (getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE') && file_exists(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE'))) {
+  if (getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE')) {
     $CONFIG['objectstore']['arguments']['sse_c_key'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE')));
   } elseif (getenv('OBJECTSTORE_S3_SSE_C_KEY')) {
     $CONFIG['objectstore']['arguments']['sse_c_key'] = getenv('OBJECTSTORE_S3_SSE_C_KEY');
diff --git a/29/apache/config/smtp.config.php b/29/apache/config/smtp.config.php
index 5006fe47..66a2ef7e 100644
--- a/29/apache/config/smtp.config.php
+++ b/29/apache/config/smtp.config.php
@@ -5,14 +5,14 @@ if (getenv('SMTP_HOST') && getenv('MAIL_FROM_ADDRESS') && getenv('MAIL_DOMAIN'))
     'mail_smtphost' => getenv('SMTP_HOST'),
     'mail_smtpport' => getenv('SMTP_PORT') ?: (getenv('SMTP_SECURE') ? 465 : 25),
     'mail_smtpsecure' => getenv('SMTP_SECURE') ?: '',
-    'mail_smtpauth' => getenv('SMTP_NAME') && (getenv('SMTP_PASSWORD') || (getenv('SMTP_PASSWORD_FILE') && file_exists(getenv('SMTP_PASSWORD_FILE')))),
+    'mail_smtpauth' => getenv('SMTP_NAME') && (getenv('SMTP_PASSWORD') || getenv('SMTP_PASSWORD_FILE')),
     'mail_smtpauthtype' => getenv('SMTP_AUTHTYPE') ?: 'LOGIN',
     'mail_smtpname' => getenv('SMTP_NAME') ?: '',
     'mail_from_address' => getenv('MAIL_FROM_ADDRESS'),
     'mail_domain' => getenv('MAIL_DOMAIN'),
   );
 
-  if (getenv('SMTP_PASSWORD_FILE') && file_exists(getenv('SMTP_PASSWORD_FILE'))) {
+  if (getenv('SMTP_PASSWORD_FILE')) {
       $CONFIG['mail_smtppassword'] = trim(file_get_contents(getenv('SMTP_PASSWORD_FILE')));
   } elseif (getenv('SMTP_PASSWORD')) {
       $CONFIG['mail_smtppassword'] = getenv('SMTP_PASSWORD');
diff --git a/29/fpm-alpine/config/redis.config.php b/29/fpm-alpine/config/redis.config.php
index 346457c5..a5b13da6 100644
--- a/29/fpm-alpine/config/redis.config.php
+++ b/29/fpm-alpine/config/redis.config.php
@@ -5,7 +5,7 @@ if (getenv('REDIS_HOST')) {
     'memcache.locking' => '\OC\Memcache\Redis',
     'redis' => array(
       'host' => getenv('REDIS_HOST'),
-      'password' => getenv('REDIS_HOST_PASSWORD_FILE') && file_exists(getenv('REDIS_HOST_PASSWORD_FILE')) ? trim(file_get_contents(getenv('REDIS_HOST_PASSWORD_FILE'))) : (string) getenv('REDIS_HOST_PASSWORD'),
+      'password' => getenv('REDIS_HOST_PASSWORD_FILE') ? trim(file_get_contents(getenv('REDIS_HOST_PASSWORD_FILE'))) : (string) getenv('REDIS_HOST_PASSWORD'),
     ),
   );
 
diff --git a/29/fpm-alpine/config/s3.config.php b/29/fpm-alpine/config/s3.config.php
index 374cba2d..9941c562 100644
--- a/29/fpm-alpine/config/s3.config.php
+++ b/29/fpm-alpine/config/s3.config.php
@@ -24,7 +24,7 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
     )
   );
 
-  if (getenv('OBJECTSTORE_S3_KEY_FILE') && file_exists(getenv('OBJECTSTORE_S3_KEY_FILE'))) {
+  if (getenv('OBJECTSTORE_S3_KEY_FILE')) {
     $CONFIG['objectstore']['arguments']['key'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_KEY_FILE')));
   } elseif (getenv('OBJECTSTORE_S3_KEY')) {
     $CONFIG['objectstore']['arguments']['key'] = getenv('OBJECTSTORE_S3_KEY');
@@ -32,7 +32,7 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
     $CONFIG['objectstore']['arguments']['key'] = '';
   }
 
-  if (getenv('OBJECTSTORE_S3_SECRET_FILE') && file_exists(getenv('OBJECTSTORE_S3_SECRET_FILE'))) {
+  if (getenv('OBJECTSTORE_S3_SECRET_FILE')) {
     $CONFIG['objectstore']['arguments']['secret'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_SECRET_FILE')));
   } elseif (getenv('OBJECTSTORE_S3_SECRET')) {
     $CONFIG['objectstore']['arguments']['secret'] = getenv('OBJECTSTORE_S3_SECRET');
@@ -40,7 +40,7 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
     $CONFIG['objectstore']['arguments']['secret'] = '';
   }
 
-  if (getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE') && file_exists(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE'))) {
+  if (getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE')) {
     $CONFIG['objectstore']['arguments']['sse_c_key'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE')));
   } elseif (getenv('OBJECTSTORE_S3_SSE_C_KEY')) {
     $CONFIG['objectstore']['arguments']['sse_c_key'] = getenv('OBJECTSTORE_S3_SSE_C_KEY');
diff --git a/29/fpm-alpine/config/smtp.config.php b/29/fpm-alpine/config/smtp.config.php
index 5006fe47..66a2ef7e 100644
--- a/29/fpm-alpine/config/smtp.config.php
+++ b/29/fpm-alpine/config/smtp.config.php
@@ -5,14 +5,14 @@ if (getenv('SMTP_HOST') && getenv('MAIL_FROM_ADDRESS') && getenv('MAIL_DOMAIN'))
     'mail_smtphost' => getenv('SMTP_HOST'),
     'mail_smtpport' => getenv('SMTP_PORT') ?: (getenv('SMTP_SECURE') ? 465 : 25),
     'mail_smtpsecure' => getenv('SMTP_SECURE') ?: '',
-    'mail_smtpauth' => getenv('SMTP_NAME') && (getenv('SMTP_PASSWORD') || (getenv('SMTP_PASSWORD_FILE') && file_exists(getenv('SMTP_PASSWORD_FILE')))),
+    'mail_smtpauth' => getenv('SMTP_NAME') && (getenv('SMTP_PASSWORD') || getenv('SMTP_PASSWORD_FILE')),
     'mail_smtpauthtype' => getenv('SMTP_AUTHTYPE') ?: 'LOGIN',
     'mail_smtpname' => getenv('SMTP_NAME') ?: '',
     'mail_from_address' => getenv('MAIL_FROM_ADDRESS'),
     'mail_domain' => getenv('MAIL_DOMAIN'),
   );
 
-  if (getenv('SMTP_PASSWORD_FILE') && file_exists(getenv('SMTP_PASSWORD_FILE'))) {
+  if (getenv('SMTP_PASSWORD_FILE')) {
       $CONFIG['mail_smtppassword'] = trim(file_get_contents(getenv('SMTP_PASSWORD_FILE')));
   } elseif (getenv('SMTP_PASSWORD')) {
       $CONFIG['mail_smtppassword'] = getenv('SMTP_PASSWORD');
diff --git a/29/fpm/config/redis.config.php b/29/fpm/config/redis.config.php
index 346457c5..a5b13da6 100644
--- a/29/fpm/config/redis.config.php
+++ b/29/fpm/config/redis.config.php
@@ -5,7 +5,7 @@ if (getenv('REDIS_HOST')) {
     'memcache.locking' => '\OC\Memcache\Redis',
     'redis' => array(
       'host' => getenv('REDIS_HOST'),
-      'password' => getenv('REDIS_HOST_PASSWORD_FILE') && file_exists(getenv('REDIS_HOST_PASSWORD_FILE')) ? trim(file_get_contents(getenv('REDIS_HOST_PASSWORD_FILE'))) : (string) getenv('REDIS_HOST_PASSWORD'),
+      'password' => getenv('REDIS_HOST_PASSWORD_FILE') ? trim(file_get_contents(getenv('REDIS_HOST_PASSWORD_FILE'))) : (string) getenv('REDIS_HOST_PASSWORD'),
     ),
   );
 
diff --git a/29/fpm/config/s3.config.php b/29/fpm/config/s3.config.php
index 374cba2d..9941c562 100644
--- a/29/fpm/config/s3.config.php
+++ b/29/fpm/config/s3.config.php
@@ -24,7 +24,7 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
     )
   );
 
-  if (getenv('OBJECTSTORE_S3_KEY_FILE') && file_exists(getenv('OBJECTSTORE_S3_KEY_FILE'))) {
+  if (getenv('OBJECTSTORE_S3_KEY_FILE')) {
     $CONFIG['objectstore']['arguments']['key'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_KEY_FILE')));
   } elseif (getenv('OBJECTSTORE_S3_KEY')) {
     $CONFIG['objectstore']['arguments']['key'] = getenv('OBJECTSTORE_S3_KEY');
@@ -32,7 +32,7 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
     $CONFIG['objectstore']['arguments']['key'] = '';
   }
 
-  if (getenv('OBJECTSTORE_S3_SECRET_FILE') && file_exists(getenv('OBJECTSTORE_S3_SECRET_FILE'))) {
+  if (getenv('OBJECTSTORE_S3_SECRET_FILE')) {
     $CONFIG['objectstore']['arguments']['secret'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_SECRET_FILE')));
   } elseif (getenv('OBJECTSTORE_S3_SECRET')) {
     $CONFIG['objectstore']['arguments']['secret'] = getenv('OBJECTSTORE_S3_SECRET');
@@ -40,7 +40,7 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
     $CONFIG['objectstore']['arguments']['secret'] = '';
   }
 
-  if (getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE') && file_exists(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE'))) {
+  if (getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE')) {
     $CONFIG['objectstore']['arguments']['sse_c_key'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE')));
   } elseif (getenv('OBJECTSTORE_S3_SSE_C_KEY')) {
     $CONFIG['objectstore']['arguments']['sse_c_key'] = getenv('OBJECTSTORE_S3_SSE_C_KEY');
diff --git a/29/fpm/config/smtp.config.php b/29/fpm/config/smtp.config.php
index 5006fe47..66a2ef7e 100644
--- a/29/fpm/config/smtp.config.php
+++ b/29/fpm/config/smtp.config.php
@@ -5,14 +5,14 @@ if (getenv('SMTP_HOST') && getenv('MAIL_FROM_ADDRESS') && getenv('MAIL_DOMAIN'))
     'mail_smtphost' => getenv('SMTP_HOST'),
     'mail_smtpport' => getenv('SMTP_PORT') ?: (getenv('SMTP_SECURE') ? 465 : 25),
     'mail_smtpsecure' => getenv('SMTP_SECURE') ?: '',
-    'mail_smtpauth' => getenv('SMTP_NAME') && (getenv('SMTP_PASSWORD') || (getenv('SMTP_PASSWORD_FILE') && file_exists(getenv('SMTP_PASSWORD_FILE')))),
+    'mail_smtpauth' => getenv('SMTP_NAME') && (getenv('SMTP_PASSWORD') || getenv('SMTP_PASSWORD_FILE')),
     'mail_smtpauthtype' => getenv('SMTP_AUTHTYPE') ?: 'LOGIN',
     'mail_smtpname' => getenv('SMTP_NAME') ?: '',
     'mail_from_address' => getenv('MAIL_FROM_ADDRESS'),
     'mail_domain' => getenv('MAIL_DOMAIN'),
   );
 
-  if (getenv('SMTP_PASSWORD_FILE') && file_exists(getenv('SMTP_PASSWORD_FILE'))) {
+  if (getenv('SMTP_PASSWORD_FILE')) {
       $CONFIG['mail_smtppassword'] = trim(file_get_contents(getenv('SMTP_PASSWORD_FILE')));
   } elseif (getenv('SMTP_PASSWORD')) {
       $CONFIG['mail_smtppassword'] = getenv('SMTP_PASSWORD');
diff --git a/README.md b/README.md
index 4c69999b..bfa9213c 100644
--- a/README.md
+++ b/README.md
@@ -163,7 +163,7 @@ If you want to use Redis you have to create a separate [Redis](https://hub.docke
 
 The use of Redis is recommended to prevent file locking problems. See the examples for further instructions.
 
-To use an external SMTP server, you have to provide the connection details. To configure Nextcloud to use SMTP add:
+To use an external SMTP server, you have to provide the connection details. Note that if you configure these values via Docker, you should **not** use the Nexcloud Web UI to configure external SMTP server parameters. Conversely, if you prefer to use the Web UI, do **not** set these variables here (because these variables will override whatever you attempt to set in the Web UI for these parameters). To configure Nextcloud to use SMTP add:
 
 - `SMTP_HOST` (not set by default): The hostname of the SMTP server.
 - `SMTP_SECURE` (empty by default): Set to `ssl` to use SSL, or `tls` to use STARTTLS.