L-Soft has implemented support for several of the list-specific message headers
described in RFC 4021 <http://www.rfc-editor.org/rfc/rfc4021.txt>, however, it
does not appear that the List-ID: header is supported. Am I mistaken, or was
this particular header omitted for some reason? I realize that there is some
potential for confusion between the List-ID= statement in the list header and
the List-ID: header in the message headers, but I do not believe that this
potential confusion should justify the omission of support for what could be a
very useful message header. The List-ID: header provides a reliable method of
identifying list messages. The 'To:' line is not reliable filter fodder. It
usually contains the list address, but some subscriber option settings cause
the recipient's address, rather than the list address, to appear on the 'To:'
line.

--
Paul Russell, Senior Systems Administrator
OIT Messaging Services Team
University of Notre Dame
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