ITS General Computing

Email Blocking at U-M

Incoming Mail

The mail relay servers block email based on bad behavior by the sending host. Hosts both originating and relaying email may be blocked.

Bad behavior may mean:

To help reduce your incoming spam, see Using the Do Not Spam List to Reduce Spam.

To find out if a particular email address, IP address, or domain is affected by the blocks listed above, use the Email Block Status Check Tool.

Outgoing Mail

Outgoing mail is blocked when it falls under the same categories of bad behavior for incoming mail.

See also Email Filtering for Viruses

Return to the IT Staff Email Resource section