[Mailman-Users] Training Mailman to find email address from NDR

Mark Sapiro mark at msapiro.net
Wed May 15 12:55:57 EDT 2019

On 5/15/19 6:45 AM, Andrew Hodgson wrote:
> Here is the bounce message, I know I can enable VERP and this problem should go away, but I wanted to see if I could get this working without VERP as we have a large mail traffic on the list.

This message is a disaster. Is this an actual bounce as received? It
almost looks like an RFC 3464 compliant DSN except see comment below.

> Received: from o198-37-151-26.outbound-mail.sendgrid.net ([])	by
>  samwise.hodgsonfamily.org with esmtps
>  (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)	(Exim 4.89)	(envelope-from
>  <no-reply at sendgrid.net>)	id 1hQs8e-0000Nl-9y	for
>  bcab-bounces at lists.bcab.org.uk; Wed, 15 May 2019 12:32:07 +0100
> Date: Wed, 15 May 2019 11:00:09 +0000
> To: bcab-bounces at lists.bcab.org.uk
> From: no-reply at sendgrid.net
> Subject: Undelivered Mail Returned to Sender
> X-Spam-Score: -0.3 (/)
> X-Spam-Report: BAYES_00=-1.9, HELO_STATIC_HOST=-0.001, INVALID_DATE=1.096,
>  MISSING_MID=0.497, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001,
> MIME-Version: 1.0
> Content-Type: text/plain; charset="utf-8"
> Content-Transfer-Encoding: quoted-printable

The message body is that of a MIME multipart message, but the main
content type is text/plain instead of

multipart/mixed; boundary="66728b7fa14ce3ed"

so the whole body is just one plain text part and is quoted-printable
encoded so that just changing the above Content-Type: won't work because
there is quoted-printable encoded content in the sub-parts including
sub-part headers.

I have seen the other replies in this thread, so I'm not adding much here.

Trying to recognize this in Mailman would be a major kludge and not
worth the effort.

Mark Sapiro <mark at msapiro.net>        The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan

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