Hi, how possible is it to relay messages, say, from Amazon SES for domains that end in @att.net or @outlook.com but keep mailcow sending e-mails by its own to any other domains, e.g. @gmail, @yahoo etc.
I have mailcow set up to relay messages for some of my domains via amazon, but I didn’t maage to fine tune it as described above.
The only information I found on the internet is to use transport maps in postfix, is it that the only way?