Some users have reported an issue to me today that they can not receive email from external clients, how they can send just fine. When I tried to test from my end I can do so without problems. I can send and receive from external mail source. Checking Exchange 2007 shows no errors in the logs, I check all settings on exchange and everything shows its configured correctly, however still when users are not receiving. Nothing has been touched on the exchange server for it to stop working. I had one user try and send to their account from hotmail and the email appears that it has been sent successfully however it does not appear in the inbox. Looking on the exchange server it shows the email was received and processed and passed on by exchange but in fact it hasn't. This is a strange strange issue. Please Help!! FYI, Exchange 2007/ Server 2008/ Outlook 2003

Hi, What the Message tracking report shows and do you installed any anti virus software is installed in Hub/mailbox servers.

How external mail flow in your enviroment? Is there spam filter installed as 1st point of contact for external emails before are pass to Hub Transport server? 1.Are they unable to receive an email from certain external email only or happenend to all? 2.You said that you are able to send/receive from external email?Do you send/receive email from SAME external email as your users

Hi, Did you check the queue? Was it stuck there? Whether the email was sent to the users in Message Tracking Log? Did you check this issue in OWA for that problematic users? Thanks Allen