Hello, I have a problem effecting all my users - they cannot send mail externally - comes back with an error message of You do not have permission to send to this recipient. For assistance, contact your system administrator.
Everything was working ok and I havent touch the exchange server for a few weeks...so doesnt knwo what as happened. I havent touch the permission on the exchange advanced tab in AD.
mail coming in and routing internally are both fine.
I have restarted the SMTP virtual server on the exchange server. The xchange server connects to a smart host on site running gfi mail essentials but I dont think that the email is hitting the smart host. I believe that the mail is getting block on the exchange itself and it is not relaying it to the smart host.
I can surf the web on the exchange server so I dont think that I have a DNS issue.