smtpprox(1) on Linux
The text 7d65a0fa62e0, as Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it. The page shows this text now.
trivial transparent SMTP proxy
Flags it lists
-
--children -
--debugtrace -
--maxperchild -
--minperchild