Unable to access webmail: Server error! (OK)

Refers to:

  • Plesk 12.0 for Linux

Created:

2016-11-16 12:41:53 UTC

Modified:

2016-12-21 19:00:05 UTC

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Unable to access webmail: Server error! (OK)

Symptoms

The following error appears when trying to access webmail:

Server error! (OK)

Apache error_log contains the following:

PHP Error: Error loading template for in  /usr/share/psa-roundcube/program/include/rcmail_output_html.php on  line 496 (GET /?_task=mail&_action=getunread&_remote=1&_unlock=0&_=1425413750044)

Cause

Webmail PHP configuration file is corrupted or has improperly settings.

Resolution

  • Roundcube

    Edit /etc/psa-webmail/roundcube/php.ini file to set variable request_order = GP

    # grep request_order /etc/psa-webmail/roundcube/php.ini
    request_order = GP
  • Horde

    Edit /etc/psa-webmail/horde/horde/php.ini file to set variable request_order = GP

    # grep request_order /etc/psa-webmail/horde/horde/php.ini
    request_order = GP
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