I’ve set up mailcow with a SMTP relay (SendGrid). Sending emails works fine, receiving emails is a bit slow but it still works. I tried adding the mailserver to gitea’s config using all 3 different ports (25, 465,587) and both the public hostname of my mailserver and localhost. It doesn’t work no matter what I do. Some times I get gateway time-out errors, sometimes I get some kind of connection and then immediately I get timeouts or disconnects for “UNKNOWN” reasons (as per the postfix/dovecot logs). Is there some special procedure to use mailcow as a mailserver for local apps?