Antti Haapala added the comment:
The new comments on the Python bug tracker also go to spam. I investigated the
mail further, and there are *several* issues there.
First: "Use the same address in the 'From:' header on every bulk mail you send."
- the mail I received from meta tracker registration had
From: PSF Meta Tracker <[email protected]>
but the `Mail From` line and return path had
`[email protected]`.
Second: still no SPF record!
Third: "Keep valid reverse DNS records for the IP address(es) from which you
send mail, pointing to your domain." there needs to be a *reverse*. Well, the
headers show that the mail was `Received: from psf.upfronthosting.co.za
([2a01:4f8:131:2480::3])`, which is an address belonging to Hetzner. Well,
guess what, that IP address does have neither forward nor reverse mapping *at
all*, that is `host 2a01:4f8:131:2480::3` does not give out PTR record for
`psf.upfronthosting.co.za` but neither does the domain have an `AAAA` record:
psf.upfronthosting.co.za has no AAAA record
At this point it would look to google equal to claiming to be sending mail from
`microsoft.com`.
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nosy: +ztane
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<http://psf.upfronthosting.co.za/roundup/meta/issue562>
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