[Slackbuilds-users] Bounce messages re mail loop

Rob McGee rob0 at slackbuilds.org
Tue May 19 07:07:29 UTC 2009

On Tue May 19 2009 00:16:52 I wrote: stuff.

I got a bounce myself. But this time it wasn't from us, it was from the 
perpetrator host. Sigh. Fortunately, it had enough information for me 
to identify and remove the subscriber.

Look at your headers from list mail. You should see something like 
this ...
    Return-Path: <slackbuilds-users-bounces at slackbuilds.org>
That's what Postfix adds; that is the envelope sender.

Our rogue subscriber had some sort of braindead filtering script which 
ignored the envelope sender, and reconstructed a NEW envelope based on 
the headers. That's why the messages were being reposted and bounced; 
this script sent them.

Again, the subscriber is removed, so the problem is resolved until 
someone else does something equally silly.

Rob - /dev/rob0 

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