Local Mail relay - Kopano


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:

NOQUEUE: reject: RCPT from localhost[]: 454 4.7.1 user@domain.tld: Relay access denied; from=localuser@localdomain.tld to=user@domain.tld proto=ESMTP helo=<ucs.domain.tld>

Any ideas on that?

After double-checking the UCR parameters and correcting them :slight_smile:

would you like to post the parameters which have been incorretly set? So other users can check their setup?



Probably mail/postfix/mynetworks