Well, it seems I spoke too soon. If the target domain is bad, e.g.
d...@gmaijkl.com the mail is marked is returned as undeliverable with all the proper bells. But if only the user is bad, e.g. d...@gmail.com the domain just sends back "250 Accepted", Status: 2.0.0, Action: deliverable which is no different than for a good email address. I have tried setting: address_verify_relayhost= in the main.cf, but when I monitor the log after running the sendmail -bv command, I still see the mail being relayed through the relay server. Thanks again. Dave > Pfft! > > Of course! > > Thanks! > > D. > >> On Thu, Apr 03, 2014 at 02:00:36PM -0500, d...@powerstandards.com 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. >> > > >
