On 9/29/2014 9:06 AM, Wietse Venema wrote: > Robert Schetterer: >> Am 29.09.2014 um 13:45 schrieb Noel Jones: >>> Is smtp_fallback_relay even used with a verification probe? I would >>> expect the probe to fail before it tries the fallback. >> >> hm... >> >> http://www.postfix.org/ADDRESS_VERIFICATION_README.html >> >> By default, Postfix sends address verification probe messages via the >> same route as regular mail, > > Indeed. For maximal realism, probe delivery is intentionally the > same as real mail delivery. > > The difference is that probes are never delivered (SMTP interruptus), > and that failed probes are never returned to the mail queue. There > is no reason to keep failed probes in the mail queue (and it would > be unwise). > > Wietse >
Sorry if I'm just too dense this morning, but this still isn't clear to me. Do probes use the smtp_fallback_relay or do they fail at the first TEMPFAIL that would cause the fallback to be used? My (quite possibly flawed) interpretation of the docs makes me think the probe will fail and not use the fallback. And seems to me using the fallback would not be generally useful. -- Noel Jones
