[Mailman-Users] Is Mailman 2.1 not plushack aware?

[Mark Sapiro]

On 06/02/2013 08:50 AM, Tanstaafl wrote:
> 
> There is no reason that Mailman couldn't be enhanced with a configurable
> *option* that would allow the domain Admin to *tell* it which
> character(s) (there was recent talk on the postfix list of postfix being
> enhanced to allow multiple characters to be defined as this delimiter)
> were to be used as delimiters.


There is a huge difference between telling your local MTA that some
character in the local part of an address is a delimiter and that it and
what follows are not part of the address for user validation/delivery
purposes, and guessing that the same thing might be true for some remote
user's MTA.

I.e. no one without knowledge of the specific domain can know whether or
not user at remote.example.com and user+extra at remote.example.com belong to
the same person or even whether or not johndoe at remote.example.com and
JohnDoe at remote.example.com belong to the same person.

   Consequently, and due to a
   long history of problems when intermediate hosts have attempted to
   optimize transport by modifying them, the local-part MUST be
   interpreted and assigned semantics only by the host specified in the
   domain part of the address.
                 RFC 5321, sec 2.3.11


> I would love to see this ability in MM3...


The issue is moot in MM 3. There, users are distinct from their
addresses. In one installation, a user may have several addresses, be an
owner of a few lists, a member of a few lists, prefer delivery from list
1 to her user+list1 at example.com address, prefer delivery from list 2 to
her user+list2 at example.com address and prefer delivery from list 3 to
her othername at other.example.net address, and have her posts to any of
the lists from any of the addresses be recognized as member posts.

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