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by zoky
938 days ago
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Then either you didn’t configure your server correctly or you were trying to run a server on an IP address that’s part of a blacklisted netblock (e.g. residential). I’ve had a mail server in colo for over a decade, and I even recently had to change IP addresses on that server, and I’ve had zero deliverability issues. Set up SPF, DKIM, and reverse DNS, and obviously don’t do anything stupid like send spam or leave an open relay, and you should be fine. |
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This is frequently the case but not always. Sometimes you don't have any server issues, and originating IP is totally fine, but your messages are 250-accepted then somehow just disappear into the void without reaching the recipient mailbox (not even the "spam" folder).
Fortunately, it's rare (in my experience), but super annoying when this happens, because with FAANGs there's absolutely no way to reach out for any technical support (unless you know someone who works there and they can help you).