On Mon, January 19, 2015 15:53, John wrote: >>> If you have people posting though mailing lists then it is likely >>> best >>> that you leave DMARC policy set to none or possibly quarantine. >>> Reject is probably too severe to seriously consider for some time >>> yet; >>> Yahoo, AOL et al. positions on the matter notwithstanding. Be >>> aware >>> that Google will deliver quarantined messages to the Gmail users >>> spam >>> folder. User sending mail from a quarantined DMARC domain through a >>> mailing list will likely have many of their messages disappear when >>> sent to subscribers with Gmail accounts. >>> > Is there any sort of work around, other than setting policy to none? >
No. And the treatment of DMARC policies: none, quarantine and reject; is entirely at the discretion of the the receiving end. They can decide to reject failed DMARC mail even if the sending domain's policy is set to none. The alternative is do not use DMARC at all. I think that John Levine probably would be sympathetic to that approach. Myself, we have our policy set to quarantine and let things get sorted out by mailing list subscribers on a case by case basis. MLM software is evolving to handle the problem; albeit in ways that may cause the authors and users of the relevant RFCs to wince. -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:byrn...@harte-lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3
