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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 reve
by shankspeaks 5y ago
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.