Roy articulated very nicely:

<snip>

>Now the gateway also reads all the postings in comp.sys.hp.mpe, and
>filters out those that it originated from HP3000-L. For the rest, those
>that originated on comp.sys.hp.mpe, it takes a copy of each one and
>sends it as an email to each subscriber on the HP3000-L list.

A slight correction for those keeping score; The gateway sends
each of the newsgroup originated messages to HP3000-L directly
and lets Listserv distribute it just like any other HP3000-L
posting.  The gateway itself acts just like any other subscriber/
poster.  Also, since I can't accurately filter out messages based
on time (propagation delays in Usenet can cause interesting things
to happen to messages :), the gateway looks at each message-id and
determines if it has seen that message-id before. If it has, then
it skips over it (since message-ids are unique).  This prevents a
message from being posted multiple times to HP3000-L.

The gateway program itself does not do any content filtering or
message "massaging" outside of reading the message into a big
character string, then writing that string back out. Although
we could do pretty much anything to it in between those actions,
we've felt that doing so presented a very slippery slope which
we didn't care to slide down. :)

Regards,
Michael L Gueterman
Easy Does It Technologies LLC
http://www.editcorp.com
voice: 888.858.EDIT or 573.368.5478
fax:   573.368.5479
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