Victor Duchovni wrote: >> So, my question is, why is that fatal instead of temporary? Shouldn't it >> be temporary? Observed on 2.5.5 and 2.4.5. > > It should not be temporary. All lookups succeed and establish that the > destination is non-existent. Postfix correctly bounces the message. > > If you really want sub-optimal behaviour and a queue full of junk, try: > > smtp_defer_if_no_mx_address_found = yes >
Just tested that; doesn't work when MX lookups are disabled in the transport with []. In hindsight, I should have realized that the lookup was fine, it was returning NXDOMAIN and rightly seeing that as a successful "does not exist" result. Of course, now the challenge is how to deal with transient NXDOMAIN responses. I'll have find out how that hostname is being updated if it is indeed dynamic DNS. ~Seth
