They also want a PTR record on your IP to match your SMTP banner matching you ho... | Hacker News

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		icameron 11 months ago \| parent \| context \| favorite \| on: Mox – modern, secure, all-in-one email server They also want a PTR record on your IP to match your SMTP banner matching you hostname. Having an mx record for you sender domain also helps. Just sending form an IP address usually is tagged spam in my experience. Its weird their FAQ doesn't mention reverse DNS at all, its a very important step in having a good sender reputation.

quesera 11 months ago [–]

The PTR match is a signal, but it's not required.

I send mail from several domains out of my mail server. The PTR record for that host actually doesn't match any of the forward hostnames.

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