I added to send and post:
The -messageid switch selects the style used for the part
appearing after the @ in "Message-ID:", "Resent-Message-ID:",
and "Content-ID:" header fields. The two acceptable options
are localname (which is the default), and random. With
localname, the local hostname is used. With random, a random
sequence of characters is used instead. Note that the -msgid
switch must be enabled for this switch to have any effect.
The default maintains the current behavior.
This message should have a random Message-ID.
Nmh-workers mailing list