On Thu, Apr 03, 2014 at 02:00:36PM -0500, [email protected] wrote:
> What I'd like to do is check on a postfix start or reload that these few
> addresses are reachable *before* I do things like set up firewalls, etc.,
> then stop sending out probes at all. Basically, I want to ping the email
> address and notify admins (via some channel) that an email address
> reachable or not.
/usr/sbin/sendmail -f bounce-address -bv probe-address
Will trigger a connection to the nexthop relay of the probe address
and an incomplete mail transaction (through "RCPT TO"). The results
will be returned to bounce-address (if not empty), and recorded in
the mail log.
--
Viktor.
