On 05/07/2014 12:45 PM, Glenn Sieb wrote:
It's ridiculous. And I want to know why, exactly, Yahoo Groups isn't being affected by this. They're not doing the "via YahooGroup" bit, or wrapping their mails. :-\ I'm betting they're not even honoring the DMARC from other providers.
Yahoo groups doesn't have problems with mail From: yahoo.com because they send the mail with envelope from ...@returns.groups.yahoo.com which passes SPF and aligns with the domain in From:, but the interesting question is what do they do with a post From: aol.com. I haven't had time to test that yet.
Note that google groups does the same From: munging that Mailman does, and only for From: domains that publish DMARC p=reject.
*sigh* I hate this frustration.
So do we all. The Mailman development community resents as much as anyone being forced into this "here's what *we're* doing, now *you* have to figure out how to deal with it" bind, but that's where we are. We are trying to talk with DMARC proponents, and we're trying to figure out how to mitigate the effects with the least possible disruption to users and to long term, established standards and practices.
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan