Hello, i did update of roundcube to 1.6.1 and after update i can not sent emails. When i tried to sent email in my error log of roundcube is Code: CHUNKING (Code: 250) in /usr/share/roundcube/program/lib/Roundcube/rcube.php on line 1794 (POST /webmail/?_task=mail&_unlock=loading1675938961689&_framed=1&_action=send) [09-Feb-2023 11:36:01 +0100]: <5478mpi4> PHP Error: SMTP server does not support authentication (POST /webmail/?_task=mail&_unlock=loading1675938961816&_framed=1&_action=send) [09-Feb-2023 11:36:01 +0100]: <5478mpi4> SMTP Error: Authentication failure: myhost.domain.cz PIPELINING SIZE 10240000 VRFY ETRN STARTTLS ENHANCEDSTATUSCODES 8BITMIME DSN SMTPUTF8 CHUNKING (Code: 250) in /usr/share/roundcube/program/lib/Roundcube/rcube.php on line 1794 (POST /webmail/?_task=mail&_unlock=loading1675938961816&_framed=1&_action=send) I tried to looking on google, here, tried to all what i found, in past i had same problem in was fixed by this https://forum.howtoforge.com/threads/roundcube-update.89633/#post-440162 but this is not worked for me. Any idea? I didnt do any changed in settings of server, just do update and upload back my settings and config file for roundcube.
Other who claimed to get it working is @Franktwells but we are not sure how he did it. Check or ask him at: https://forum.howtoforge.com/threads/solved-roundcube-1-6-installation.89367/