[qson]

Har lite problem med vårt e-postsystem. Vissa kan inte skicka e-post till oss, de får sina mail i retur. Jag har testat från hotmail, gmail, vanlig smtp från egen och annan server, och alla mina mail går fram. Har inte lyckats få tag på något felmeddelande som gått i retur när någon försökt skicka, men däremot när jag försöker skicka till vissa adresser så får jag följande i retur:

This message was created automatically by mail delivery software.
A message that you sent has not yet been delivered to one or more of its
recipients after more than 24 hours on the queue on em**.mindomän.com.

The message identifier is: 1QUCOF-******-42
The date of the message is: Wed, 08 Jun 2011 08:37:19 +0200
The subject of the message is: Fwd: Re:

The address to which the message has not yet been delivered is:

h****e@r***.net
Delay reason: SMTP error from remote mail server after RCPT TO:<h****e@r***.net>:
host mx1.r***.net [204.***.***.18]: 450 4.1.8 <ekonomi@***.se>:
Sender address rejected: Domain not found

No action is required on your part. Delivery attempts will continue for
some time, and this warning may be repeated at intervals if the message
remains undelivered. Eventually the mail delivery software will give up,
and when that happens, the message will be returned to you.

Vad göra?