Fully-qualifying Email addresses in outgoing mail

[patl@cag.lcs.mit.edu (Patrick J. LoPresti)]

(I realize this is not specifically a Gnus question, but I figure the
people on this list are the most likely to know.)

We use qmail, whose SMTP daemon does not do any kind of header
munging.

We have users running Emacs on Windows, who therefore must use
smtpmail.

Consequently, their Email tends to have bare addresses (e.g., "foo"
instead of "foo@bar.com") in the headers.  This causes all sorts of
subtle and annoying problems.

My question is, does anyone have ideas for how I should deal with this
problem?  I guess what I want is for smtpmail to do a bunch of checks
on the headers before sending the message.  But since message-mode
already does the checks itself, perhaps one could be added which
fully-qualifies outgoing Email addresses?

Thanks in advance for any suggestions.

 - Pat