[colug-432] colug.net and gmail not playing well together?

[Ethan Dicks]

On Tue, Mar 7, 2017 at 1:13 PM, Ethan Dicks <ethan.dicks at gmail.com> wrote:
> On Tue, Mar 7, 2017 at 12:52 PM, Jeff Frontz <jeff.frontz at gmail.com> wrote:
>> I just got [what purports to be] a robo mailing from colug-432-reqeuest
>> saying that my membership was being disabled "due to excessive bounces"....
>
> I haven't been seeing this on colug-432 but I'm seeing this exact
> thing on a different list I'm on that has been an ongoing thing.

Today's nugget from the other mailing list...

"The "From:" header containing the original
author's address is the cause of the unsubscribes due to bounces, and (I
assume) the motivation for the recent change to the list behavior.

The problem is that major production MTAs will reject (bounce) email with a
"From:" whose domain uses DKIM or SPF, when the sending MTA isn't in the
DKIM or SPF authorized sender list. This will almost always be true when
messages are forwarded by a mailing list. Since the bounces go back to the
mailing list, the mailing list software then drops the entirely legitimate
list subscriber's subscription.  :-(

The behavior you describe is certainly correct according to the RFCs, but
unfortunately now falls apart in practice.  :-("

-ethan