poll pop.fast.net proto POP3 user rhkramer to dad password <password> expunge 25

# poll pop.fast.net proto ETRN user rhkramer to dad password <password>

# IMAP, ETRN, and presumably O___ do not work on fast.net (see man fetchmail)

# ETRN or O___ would let fetchmail (postfix?) act like a "peer" MTA to fast.net's MTA

# expunge 25 forces fetchmail to stop after downloading 25 emails to actually expunge the 25 emails it just downloaded.  (To me, the flush after each message is misleading because the downloaded are not actually deleted (expunged) -- I'm guessing they are just "marked for deletion".)