Using the Sendmail Reject List to manage spam

The Sendmail Reject List is a list of email sources that you identify as sources of unsolicited email. It disallows delivery of email messages from the sources identified in the list to any site user. For example, if you include the IP address 1.2.3.4 in the Reject List, all email messages that originate from the address will be blocked from being relayed to all users of the site.

The address source can be any of the following:

- An email address - The email address is blocked.

- A site - All email messages that originate from the site are blocked.

- An IP address - All email messages that originate from the specified IP address are blocked.

If you enter a partial IP address, all email messages that originate from any IP address in the subnet are blocked. For example, specifying 1.2.3 will block all IP addresses in the subnet, 1.2.3.0 through 1.2.3.255.

You can also use the Spam Filter service to control and manage spam. The Sendmail Reject List and spam filter lists vary in their approach and flexibility in managing spam.