I'm running sendmail-8.12.8-6.90 on a RH9 box on an internal network
I want to process email for the intranet seperatly: check for tag in subject line, virus check, tunnel through firewall for delivery.
My first thought was to queue all undeliverable emails so that I can raid the mail queue
but it does not seem to work, and it requires an SMTP gateway to be set up.
2 parts to this question really:
is there a better way to do this outgoing filtering?
if not, is there a better way to queue non-local email (HOLD_EXPENSIVE or something)?