From: Martin Brampton <martin@black-sheep-research.com>
To: mlmmj@mlmmj.org
Subject: [mlmmj] SPF Alignment
Date: Tue, 25 Aug 2020 11:11:55 +0000 [thread overview]
Message-ID: <56c10cea-f802-bc61-0c42-e1bec911986e@black-sheep-research.com> (raw)
Apologies if this has been raised before, but I couldn't find anything.
There seem to be issues over SPF alignment for using mlmmj. Using a mail
server tends to involve the From address (on the sender's domain) and
the ReturnPath (on the list server's domain) being different, for
obvious reasons. But this makes SPF not aligned.
In theory, this would not matter for DMARC if DKIM is aligned. But not
every sender will have DKIM set up correctly.
Worse, it seems that arrogant and unhelpful BT Internet is sending mail
to spam if it is not SPF aligned, even though it is passing DMARC, SPF
and DKIM tests. It appears that a lot of BT Internet users don't look at
their spam. I can't tell that for sure, but it seems the only
explanation for what is happening.
If I send to a mailing list that includes a.n.other@btinternet.com from
a mail box on a different domain to the mailing list, the mail goes to
spam. If I send from a mail box on the same domain as the mailing list,
it doesn't go to spam. The only difference I can see is that the former
is not SPF aligned.
Unfortunately, this makes mlmmj mailing lists unusable if any of the
list members have addresses like a.n.other@btinternet.com. I don't know
whether the same applies to any other mail providers.
Any thoughts on this?
next reply other threads:[~2020-08-25 11:11 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-25 11:11 Martin Brampton [this message]
2020-08-28 9:09 ` [mlmmj] SPF Alignment Per Jessen
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