[conspire] Tip: GNU Mailman is stupid about plus-addressing

[Rick Moen]

Some subscribers will know about a useful SMTP trick called 'plus
addressing'.  See
http://webapps.stackexchange.com/questions/108/alternatives-to-plus-addressing

I might decide to subscribe to this address as
rick+cabal at linuxmafia.com, to SVLUG's mailing lists as
rick+svlug at linuxmafia.com, etc.  No, that's hardly the only way to 
manage mail.  Arguably there are a lot better ways -- but let's just say
it's useful.

One CABAL member did that with his subscription to the conspire list.
Fine idea.  Only, his post got held as arriving from a non-subscribed
address.

I checked:  His posting arrived with the version of his address without
the '+cabal' extension.  His subscription was for the version with
'+cabal'.  Mailman's too braindead to know they're the same sender.

I helped our subscriber by also subscribing the second variant and
setting that subscription's 'nomail' attribute.  (You the subscriber can
of course also do that.)