Communication problems with email can be caused by many factors.

Sometimes email may accidentally be redirected to another account. It’s possible that a mail forwarding loop was inadvertently set up. Or that an end user has an Exchange account that is not their preferred email address.

Email can also be blocked due to email quota limitations. Mail filters may also block email based parameters associated with certain email attachments. Bandwidth limitations can also be the cause of email download problems.

All administrators should be logging error messages. All email transactions can be logged and tracked by enabling logging in Outlook. This will allow an administrator to review the logs and identify undesirable trends or patterns with email. Logging of email transactions can be enabled using the following steps:

1. From the Tools menu select Options
2. Choose the Other tab.
3. Click on Advanced Options.
4. Verify that “Enable logging” is enabled.
5. Click OK

If the problem you are having is about long download times from an Outlook 2007 client and you are using a Post Office Protocol (POP3) email server then there are some additional possibilities.

Also, if you encounter time out errors when using a Simple Mail Transfer Protocol (SMTP) server you may get an error message such as:
 
“Task ‘Main – Sending and Receiving’ reported error (0x800CCC0F): The connection to the server was interrupted. If this problem continues, contact your server administrator or Internet service provider (ISP). “

If you receive this error message then it’s an indication that a network hardware device, such as a router, does not support TCP Window Scaling.

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