sendmail can lose forwarded mail

[Mark Horton]

Sounds like the "metoo" business may be getting involved.
If you send to a mailing list and you're on it, it won't
send you a copy.  A .forward is just a mailing list with
only one person on it.  If I'm right, it only matters for
cases involving sending yourself mail in useless ways,
but won't affect real mail.  Of course, people tend to
send themselves test messages, and that can cause alarm.