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How To

This error occur when user login to roundcube, they can’t login and there was error “connection to server failed” on screen.

Then to fix this problem, I inspect the roundcube server and it’s log.

  1. Because the error was “connection to server failed”, I check connection to mysql server

    a. There’s nothing wrong with mysql server, it can connected using roundcube provide account

    b. php-mysql was installed on server

    The mysql was not a “culprit” in this case

  2. Check roundcube log, it located at roundcube-folder/logs/errors.log, there was error

    [03-Jun-2023 18:54:57 Asia/Jakarta] PHP Deprecated:  Return type of zipdownload_mbox_filter::filter($in, $out, &$consumed, $closing) should either be compatible with php_user_filter::filter($in, $out, &$consumed, bool $closing): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /roundcubemail/plugins/zipdownload/zipdownload.php on line 405

[03-Jun-2023 18:54:57 +0700]: <58rulgqo> IMAP Error: Login failed for help@ipang.my.id against mail.ipang.my.id from 172.xxx.xxx.xx (X-Forwarded-For: 172.xxx.xxx.xxx). Could not connect to ssl://mail.ipang.my.id:993: Unknown reason in /roundcubemail/program/lib/Roundcube/rcube_imap.php on line 211 (POST /?_task=login&_action=login)

    First error, I think it because php-zip was not installed, but at server already installed php-zip (You can ignore that error)

    Second error, It was the real problem. To solve that, check your mail server

    a. Make sure your mail server was running

    b. Check your mail domain certificate (in my case it error because my domain certificate was expired)

That’s it, try again to login to your roundcube, it should be working for now.