[Mailman-Users] DMARC issues

Joseph Brennan brennan at columbia.edu
Thu Apr 10 17:27:24 CEST 2014

Lindsay Haisley <fmouse at fmp.com> wrote:

> SPF inherently breaks mailing lists

No, it doesn't.  SPF checks the envelope sender, and when the list host is, 
say, lists.example.com, the envelope sender is something like 
listname-bounces at lists.example.com, and that can pass SPF. Mailman, 
Listserv, etc, all write their envelope sender that way.

Joseph Brennan
Columbia University Information Technology

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