I want Proxmox and other systems or services on other computers to send via Kopano mails on errors. I followed the howto from: https://wiki.univention.de/index.php?title=Mailrelay_unter_UCS
Obviously I missed some configuration parameters because neither the mail relaying for other machines nor mailing on the localhost (via webinterface) is working.
In the logfile following error occurs:
Any ideas on that?
After double-checking the UCR parameters and correcting them