Unsolicited commercial e-mail (UCE) sent to recipients across the Internet is a growing problem for Internet mail server administrators. UCE can consist of special offers, commentaries, or any message a sender wants to convey to as many recipients as possible over the Internet. Often, senders relay messages through large, well-known Internet servers to avoid burdening their server with performing the majority of the delivery work.
For example, your server receives one UCE message addressed to 10,000 recipients on 5,000 different Internet mail servers. Without configuring any UCE prevention, your server will host the message, and attempt to deliver it to each of those 5,000 servers. This increased load can significantly hinder your server's performance and prevent it from efficiently delivering messages to recipients on your server.
You can prevent your Microsoft Exchange Server computer from relaying messages to recipients outside your organization by configuring the Internet Mail Service not to accept messages addressed to outside recipients. Use this for messages sent through Simple Mail Transfer Protocol (SMTP) hosts. Specified messages received by the Internet Mail Service that are addressed to recipients outside the organization are returned to the sender as non-deliverable.
To configure message relaying, run the Internet Mail Wizard and install the Internet Mail Service. After the Internet Mail Service is installed, you can configure relay restrictions and custom message filtering.
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To install the Internet Mail Service |
You can now customize the Internet Mail Service using various property pages.
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To access the Internet Mail Service property pages |