Jakob Hirsch wrote:
> W B Hacker, 2010-06-16 13:24:
> 
> (sorry for repost)

No sweat.

> 
>> There is no MX RR for relay.rzone.de   Exim appears to have found it by its 
>> A RR.
> 
> You seem to think relay.rzone.de is the rcpt domain of the message the
> OP had a message for.

I think that is the more likely case, yes.

I base that observation largely on the general disarray in DNS, propagation 
diffs - website under construction, a redirect to another domain going 
walkabout 
even as I was researching it, larger than usual number of third-party players, 
etc.

Add to that what the sendmail MTA on that box returned just now:

2010-06-16 19:35:30 [26048] 1OOyOW-0006m6-Kk ** [email protected] 
F=<[email protected]> P=<[email protected]> R=dnslookup T=remote_smtp: SMTP 
error from remote mail server after RCPT TO:<[email protected]>: host 
relay.rzone.de [81.169.145.96]: 550 5.4.0 Relaying denied

 > But it's only a hostname listed as a MX for some
> domain.
> 

Certainly possible.

Unless someone else has knowledge of one or more specifics, however, we're 
guessing.

Only the OP and his logs know what happened *at the time* in his case.

And he redacted the MX the custom error message was pointing him to, which 
might 
have help resolve the mystery....

>> Either way, not really an Exim issue at all.
> 
> ack.
> 

The environment in this particular case makes for a very tenuous foundation for 
discussion of what Exom does about MX records.

Gruss,

Bill

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