[Mailman-Users] DMARC issues

[Joseph Brennan]

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