[Mailman-Users] Ignoring username+ at whatever.edu addresses?

alex wetmore alex at phred.org
Tue Jul 17 00:29:29 CEST 2001

On Mon, 16 Jul 2001 mailman at darksleep.com wrote:
>      I'm sure they're using something like address plussing, though
> the examples I've seen to date are simply username+ at blah.edu.  I don't
> want mailman to strip the + out, but I would like it to not freak out
> and hold such messages for approval (list set up with posting by list
> members only).

AMS (Andrew Mail System, from Carnegie Mellon University ) used to do
this, and Cyrus might as well.  I don't know if anyone is still using
AMS though.  cmu.edu and pitt.edu are two common domains that used it
(I went to CMU and AMS was still in heavy use at the time, but I think
that they have switched over to Cyrus now).

>      Is there any way to set up an email alias for a given user in
> mailman?  That would be relatively simple, just tweak the subscribe
> CGI form to automagically subscribe both variations.

Your users can always subscribe twice, once with the + and once
without, and set one to nomail.  You could fairly easily write a
script to do this if you like.  It also wouldn't be hard to write a
filter that got invoked before mailman and converted From
"foo+ at bar.edu" to "foo at bar.edu", but that is kind of ugly.


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