[TUHS] Excessive bouncing ... argh!
Ian Zimmerman
itz at very.loosely.org
Sun Sep 24 02:27:54 AEST 2017
On 2017-09-23 16:57, Tom Ivar Helbekkmo wrote:
> Why should anyone need to? Of all the mailing lists I'm on, this one
> is the only one that has this problem. For instance, on the NetBSD
> mailing lists, my email reaches other recipients "From:" my real email
> address, and SPF, DKIM, and DMARC all check out clean. Here are the
> headers from a message I sent to a NetBSD list, as received by my own
> system (whereas the message I sent to the TUHS list last night was
> refused by my MTA):
Probably because the NetBSD list, unlike the tuhs list and most others,
doesn't mess with the headers or body in any way - not by attaching a
"helpful" tag to the Subject, and not by appending an xtra fake sig with
unsubscription info.
Either of these "modern" paractices will invalidate the source DKIM
signature, and so also trigger a DMARC reject if a strict policy is set.
By the way, my inbound processing automatically strips the Subject tag
before I get to see the messages. It is useless.
--
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