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Troubleshooting Mail Delivery

There are several reasons why mail sent to @umich.edu addresses might not reach the final destinations:

Bad behavior by the sending host. This blocking is done at U-M's primary mail gateway for all mail going through that gateway. For details see E-Mail Blocking at U-M.
Optional spam blocking. Users may choose to have mail from known spam sources blocked. For more details, see Using the Do Not Spam List to Reduce Spam.

Troubleshooting Tools

Block Status Check
Use the Block Status Check tool to find out if a particular IP address, e-mail address, or domain is currently blocked.
Keep In Touch
Use the Keep In Touch tool to send messages to people at U-M if mail from your e-mail account is blocked. Use of the tool requires that you first set up a U-M Friend account so you can log in. For details about Friend accounts, see How to Set Up a Friend Account for Guest Access to U-M Computing Resources (S4316).