Exchange 2007 Server My SMTP/POP Outlook clients are all have an error message when they send / receive. Everything was working normally for many months until this morning. I have tried rebooting the server but did not change the situation. I am sending / receiving on the server connected Outook clients normally. I am able to telnet into Exchange on ports 25, 587, 110 from a PC that has error connecting issue. I am stumped. Suggestions? Outlook Connection Error messages "Task 'mail.xxxx.xxx' - Receiving reported error (0x800ccc0f): The connection to the server was interrupted. If this problem continues contact your administrator or internet Service Provider (ISP). "Task 'mail.xxxx.xxx' - Sending reported error (0x80042106): The operation timed out waiting for a response from the sending (SMTP) server. If you continue to receive this message contact your administrator or internet Service Provider (ISP). NC Beach Bum

http://support.microsoft.com/default.aspx?scid=kb;en-us;813514&Product=oex

Hi, For this issue, you can follow these steps to troubleshoot the problem: 1. Check the setting on your Firewall and Anti-virus software. 2. As this problem also can be caused by damaged profile, please create a new profile to have a try. If the issue persists after you do the steps above, please feel free to let me know and I will be glad to help. Best Regards, Evan