Re:Maddy: Composable all-in-one mail server
by shankspeaks on Saturday June 19, 2021 @01:43AM
(#27558100)
I've run mail servers on EC2 before. You'll need to raise a request to remove the SMTP 25 restriction (both inbound and outbound), and also apply for a DNS reverse ptr update for that IP for it to work.
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