I’ve setup everything ok in MiaB - I think - and my admin status shows that everything is on green for my domain, except for DNSSEC which my domain name provider doesn’t support for my extension. Still, I am getting the error
15] Our system has detected that this message is 421-4.7.0 suspicious due to the very low reputation of the sending IP address
when forwarding emails to a gmail.com address. By looking at the logs, it does seem that Gmail is blocking genuine emails too.
I’ve tried to check Google’s docs related to the matter, but I can’t find anything special that I could do. Only thing that seems relevant is that MiaB (or Postfix in this case) would change the headers or the content of the email somehow, but I don’t think that’s happening either.
And when I send emails to http://www.mail-tester.com I get a full 10/10 score.
Can anyone help me with this issue please? The domain in question is
EDIT: After a bit of Googeling (https://www.digitalocean.com/community/questions/temporarily-rate-limited-from-google-in-mail-relay), I stumbled upon something called SRS (https://en.wikipedia.org/wiki/Sender_Rewriting_Scheme) that apparently should be used for cases like this. Does MiaB support SRS? And is this my problem?