[Mailman-Users] Giving away the secrets of 99.3% email delivery

Ralf Hildebrandt Ralf.Hildebrandt at charite.de
Fri May 11 11:34:57 CEST 2012

* Geoff Shang <geoff at QuiteLikely.com>:
> On Fri, 11 May 2012, Ralf Hildebrandt wrote:
> >On the other hand we're getting spam reports for list mails (not
> >spam!) our users sent to a list. But since it's not spam we cannot
> >actually do anything about those mails while the LIST ADMIN could
> >easily unsubscribe the people reporting the spam.
> Except the list admin may not know about this.

Yes, he doesn't know, since he's never notified. We're getting the
feedback-loop mails.

> Some people are just too lazy to unsubscribe from a list they
> double-opted into and report the mail as spam.

> I had a situation where the organisation I was working for was having
> all mail sent from its server being completely blocked by a large
> American ISP, all on the back of one person's spam reports.

Same here.

> They wouldn't even tell us what the address was.  Fortunately I was
> able to figure out the address and the list from the headers of a
> message and remove the person in question.  I'm not sure that I'dve
> been able to do this with a Mailman message, they were using inferior
> (IMHO) list software then.
> The only way we could avoid this happening again was to subscribe to
> their feedback loop.  Then we would receive the spam reports instead
> of them being immediately acted upon, under the understanding that we
> would act on them instead.


> Of course, everyone has their own feedback loop, and if you care
> about getting mail through to big providers, you'll probably need to
> subscribe to all their feedback loops.

Oh yes.

Ralf Hildebrandt                   Charite Universitätsmedizin Berlin
ralf.hildebrandt at charite.de        Campus Benjamin Franklin
http://www.charite.de              Hindenburgdamm 30, 12203 Berlin
Geschäftsbereich IT, Abt. Netzwerk fon: +49-30-450.570.155

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