Daniel Buchholz <buchholz@???> probably said:
> MX 10 could not verify the sender address, returned 451
> The sending MTA immediately tried MX 20 (Ist that ok?)
Perfectly valid.
> MX 20 said relaying not allowed, returned 550 (this is our provider, seems I
> have to do a phone call)
> Sending MTA then gave up permanently. Is that ok? The highest prio MX (me)
> said 451!
a 5xx code is a 5xx code - perm. failure. The delivery failed.
> Is this a local or remote conf error?
Your 20 MX is misconfigured.
P.
--
pir pir@??? pir@???
