On Tue, 10 Mar 1998, Brad Knowles wrote:
How do you distinguish between the two? Why not just check for a
single "Received:" header at *both* the primary and secondary MXes?
Because procmail is used as a delivery agent only at the primary MX. The
secondary just holds until the primary wakes up (although I've seen quite
a few RFMS spams come through my secondary even though the primary hasn't
gone down in about two years...).
--
Andrew O. Smith - <aos(_at_)insync(_dot_)net> | "Please allow me to present
Sysadmin, Insync Internet Services | you with a clue."
Houston, Texas, USA | --The Afghan Whigs