Hello, I hate asking for help but, can’t figure out what’s wrong.
I’m trying to allow Gmail to send mail as email@example.com
I set up a mailcow server mail.domain.com with a firstname.lastname@example.org adress, with pretty much standard settings, on a local computer running ubuntu.
What is not standard : I have a main reverse proxy container redirecting to the mailcow nginx container, and I also use a smtp relay to bypass my ISP port filtering (25).
Everything works, I can send and receive mails with SOGo to other adress (mail-tester.com, gmail)
But I cannot understand why can’t I make Gmail being able to send as email@example.com, using default mail.domain.com on 587 : error code “Can’t reach server, check server and port number”.
In my ISP domain manager I have standard records for smtp.
I don’t find anything in documentation to sort of “allow other service to connect” and use mailcow as relay. I’m not much of an mail server expert :/
thx for any help, and thx anyway for this awesome mailcow stuff.