Knowledge Base

Webmail shows 504 Gateway Time-out

Unable to log in to webmail service or perform some operations fail once already logged into webmail, with error:

504 Gateway Time-out
When importing a mailbox via webmail service, the following error is shown in the browser console:

Failed to load resource: the server responded with a status of 504 ()

Connection Error (Failed to reach the server)!
In Nginx log file /var/log/nginx/error.log one of the following error messages might be found:

[error] 12026#0: *1721 upstream timed out (110: Connection timed out) while reading response header from upstream, client: 203.0.113.2, server: webmail.example.com, request: "POST /services/ajax.php/imp/viewPort HTTP/1.1", upstream: "http://203.0.113.1:7080/services/ajax.php/imp/viewPort", host: "webmail.example.com", referrer: "http://webmail.example.com/imp/dynamic.php?page=mailbox"

Insufficient timeout values are configured.

Connect to the server via SSH
Edit the Webmail php.ini file and increase max_execution_time and max_input_time values:
- For Horde: /etc/psa-webmail/horde/horde/php.ini
  
  # egrep "max_execution_time|max_input_time" /etc/psa-webmail/horde/horde/php.ini
  max_input_time = 600
  max_execution_time = 300
- For RoundCube: /etc/psa-webmail/roundcube/php.ini
  
  # egrep "max_execution_time|max_input_time" /etc/psa-webmail/roundcube/php.ini
  max_input_time = 600
  max_execution_time = 300
- For Plesk Premium Mail: /usr/local/psa/var/modules/kolab/webmail/php.ini
  
  # egrep "max_execution_time|max_input_time" /usr/local/psa/var/modules/kolab/webmail/php.ini
  max_input_time = 600
  max_execution_time = 300
Edit the Apache configuration /etc/httpd/conf.d/fcgid.conf and increase FcgidIOTimeout value:

# grep FcgidIOTimeout /etc/httpd/conf.d/fcgid.conf
FcgidIOTimeout 300
Edit the Nginx configuration file /etc/nginx/nginx.conf adding the following directives inside the http {} code section:

proxy_send_timeout 300s;
proxy_read_timeout 300s;
fastcgi_send_timeout 300s;
fastcgi_read_timeout 300s;
Reload Apache service:

# service httpd reload
Reload Nginx service:

# service nginx reload

Connect to the server via SSH
Edit the Webmail php.ini file and increase max_execution_time and max_input_time values:
- For Horde: /etc/psa-webmail/horde/horde/php.ini
  
  # egrep "max_execution_time|max_input_time" /etc/psa-webmail/horde/horde/php.ini
  max_input_time = 600
  max_execution_time = 300
- For RoundCube: /etc/psa-webmail/roundcube/php.ini
  
  # egrep "max_execution_time|max_input_time" /etc/psa-webmail/roundcube/php.ini
  max_input_time = 600
  max_execution_time = 300
- For Plesk Premium Mail: /opt/psa/var/modules/kolab/webmail/php.ini
  
  # egrep "max_execution_time|max_input_time" /opt/psa/var/modules/kolab/webmail/php.ini
  max_input_time = 600
  max_execution_time = 300
Edit the Apache configuration /etc/apache2/mods-enabled/fcgid.conf and increase FcgidIOTimeout value:

# grep FcgidIOTimeout /etc/apache2/mods-enabled/fcgid.conf
FcgidIOTimeout 300
Edit the Nginx configuration file /etc/nginx/nginx.conf adding the following directives inside the http {} code section:

proxy_send_timeout 300s;
proxy_read_timeout 300s;
fastcgi_send_timeout 300s;
fastcgi_read_timeout 300s;
Reload Apache service:

# service apache2 reload
Reload Nginx service:

# service nginx reload