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I operate my own mail server at speedofsoundgaming.com and mwtd.net. I recently added a DMARC record to my domain to help prevent spam, and once seeing that things seemed to be working, upped the level to quarantine from none. However, I had not sent an email through a mailing list before doing this (I rarely use this domain for mailing lists anyway), but now when I send emails through a mailing list, it gets quarantined (so far as I can tell, so far from yahoo, and probably alot more). This, as you can imagine, is a big problem for me.

So my question:

Is there anything I can do to my DMARC record, apart from setting it to none (as that would defeat the purpose of DMARC to prevent spam) to let my emails go through when sent through a mailing list?

A little more info:

This email list also signs its emails using DKIM, but I believe that wouldn't really matter anyway because as they add a footer, etc my own DKIM signature would be invalid even if they didn't sign. I sign my emails using DKIM and have a valid SPF record in place, and both, along with my DMARC record, seem to work fine, according to things like verifier.port25.com, unless they're going through a mailing list.

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