4.0.3 sendmail -t -d -v sets wrong sender (

[Webster Dove]

When we switched to 4.0.3 and remote mounted spool, messages mailed from
emacs had the sender set to the recipient.  This turns out to be a
misfeature of sendmail in that the pty it talks to must be a login pty (as
shown by 'who') or sendmail can't find the sender.  

uunet!unclejack.crd.ge.com!barnett (Bruce Barnett) pointed out that there
was a fix in a newer emacs (18.55 has it).  The fix is to explicitly use
the -f switch in sendmail to set the sender.

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