POPMOTD allows system administrators to send POP users information without
actually mailing anything.  System administrators can
place numbered messages in a specified directory (default is
/var/mail/popmotd), which are read by the POP program.  In the POP user's
home directory a file called .popbull is created, which contains a single
number.  The POP program will read this file to determine the number of
the last POPMOTD the user has received.  It then scans the popmotd
directory for MOTD files with a number greater than that in the user's
.popbull file.  If such files exist, they will be appended to the user's
regular mail drop.

The /var/mail/popmotd directory can contain files named 1, 2, 5, 20,
etc; the filenames must be _numbers_.  Each file must have, at the minimum, 
a typical 'From ' line at the top.  'Date: ', 'To: ', and 'From: ' lines 
are recommended as well, although they are not required.

All POPMOTD code is contained within preprocessor commands,
#ifdef POPMOTD
#endif /* POPMOTD */

To enable POPMOTD capability in the POP program, at compile time define
POPMOTD.  To do so, add -DPOPMOTD to the 'DEFS' line.


