My incoming sendmail connections are timing out in RCPT TO

[Laura N. Mascio]

  My incoming sendmail connections are dying while waiting for my
sendmail daemon to respond to RCPT TO: lines.  If I move my
/etc/aliases* files out of the way I don't have this problem (but
obviously don't have alias support anymore.)  I've executed
newaliases(1) any number of times to no avail.  Does anyone have
any idea why my sendmail daemon is hanging?

  Please respond directly to me (lmascio at lunch.llnl.gov) since I don't
read this news group.  I'll post a summary along with the solution.
Thanks for your time and help!

--Laura