550 Relaying is Prohibited

  • From: Meral KESKINER <MeralK@xxxxxxxxxxxx>
  • To: exchangelist@xxxxxxxxxxxxx
  • Date: Wed, 1 May 2002 17:45:08 +0300

> Hello,
> 
>       We have Exchange 5.5 server and in the connections and routing
> table, we have a record like sent to A.com is routed to 195.x.y.z.
> 
        When we want to send an e-mail to A.com with Outlook Express and
Netscape messenger email clients, it returns a NDR saying, 550 Relaying is
prohibited. But While sending with outlook client, no such error. It
delivers the email.

        What can be the reason for this issue? How can I solve the problem?

Any idea?

Thanks,
Regards,
Meral


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