googlegroups strips recipient delimiter

Friends,

Unless I have procmail and/or mutt misconfigured, I've run across a
problem with the vim mailing lists in particular and possibly
googlegroups in general.

It seems that googlegroups strips any recipient delimiter from an
address when crafting any message destined as a reply.

For example, I registered for vim_use with the address,
<list+vim@jorge.cc>. Replies--or any post, in fact--from the mailing
list are addressed to <list@jorge.cc>.

Not a big deal, perhaps, but I use the "+" recipient delimiter and the
following extension to filter incoming mailing list messages and route
them to a specific mailfolder and/or a forwarding address.

The deletion of the recipient delimiter and its extension appears to
extend to all relevant headers in mailing list postings.

It's a little odd because the googlegroups subscription interface
relies on a recipient delimiters to distinguish subscription requests
from other administrivia.

Has anyone else noticed this behavior and perhaps devised some means
of retaining the recipient delimiter and its extension in any of the
standard googlegroups headers? X-Original_To:, To:, or any other
header?

Thanks,

JL

--
Jorge Luis <list+vim@jorge.cc>
http://www.jorge.cc/

This email optimized for teletypes.

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