Under what conditions will sendmail try to immediately resend a message instead of waiting for the standard requeue interval?
- by Mike B
CentOS 5.8 | Sendmail 8.14.4
I used to think that if SendMail experienced a temporary (400-class) error during delivery, it would place the message in a deferred queue (e.g. /var/spool/mqueue) and retry an hour later. For the most part, that appears to be the case. But every now and then, I'll notice log entries like this (email/domains renamed…