On 2015-02-12 16:35, Michael Orlitzky wrote:
On 02/12/2015 01:26 PM, Michael Wise wrote:
You need to rewrite the From: Header.
To elaborate: if you send a message claiming to be From: u...@aol.com,
it's going to be rejected by anyone who checks their DMARC policy.
Because you aren't AOL. Rewrite the header so it says "From:
your-listserv on behalf of u...@aol.com <l...@example.com>". Then the
recipient won't care about AOL's DMARC policy.
Or if the message is DKIM signed with a restrictive DMARC policy, just
don't modify the message. If you're not modifying the subject or adding
a footer or whatever, a message can successfully pass through a mailing
list with DKIM signature intact.
This isn't necessarily compatible with all mailing lists though, for
obvious reasons.
Such is life. Personally, I have no problem mangling or blocking
messages from users using a domain with a restrictive DMARC policy as
needed.
--
Dave Warren
http://www.hireahit.com/
http://ca.linkedin.com/in/davejwarren
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