550 Administrative Prohibition error message

Hi there,

Wondered if anyone has seen this error message when sending smtp mail. We only get this message when mail is sent to a certain ISP (just since last week). Mail to this ISP was working fine before last week. Our Domino servers send SMTP mail to a SAV for SMTP Gateways server which then routes mail to the internet. Is there a setting somewhere in Domino that needs to be set to correct this problem, or does the problem lie with the SAV Server.

Any help is appreciated.

Thanks

JB

Subject: 550 Administrative Prohibition error message

Did manage to resolve your issue as we have got exactly the same problem and I am struggling to resolve it?

Thanks

Sarah

Subject: RE: 550 Administrative Prohibition error message

Is your ISP running Exim as the smtp MTA? This may be a standard Exim reply, and can be for a range of different reasons.