Hi guys, I am in the process of updating my servers from ISPConfig 3.1.15 to the latest 3.2. So far everything has worked fine. But now it is so that no more mails can be sent from Roundcube. There are three servers, the master and two slaves, all Debian 10. Roundcube runs on the master, the other two servers have Dovecot and Postfix installed and replicate each other. The roundcube is set up to connect to a load balancer that rotates between the two mail servers. Postfix has a smarthost on both servers. I log in to the roundcube, this works without problems. Then I write a mail and want to send it, it acknowledges with Mail sent and it ends up in the sent folder, but in the log on my smarthost I don't see any mail. On the Roundcube server I don't see any PHP errors, on the two mail servers I don't see any send attempt to the smarthost in the maillog either. It seems that the send button is only executing partial commands. Have you had anything like this before?
Sorry for the late reply. I have not seen something like this before. Can you share your Roundcube config and mail.log?
