How to Prevent Spoofed Email With Symantec

You can take steps to prevent spam from entering your inbox.

Spoofed email is a type of spam that appears to be coming from your own domain. You may receive spoofed email when your Microsoft Exchange server doesn't have the correct security information and isn't protected at the gateway level by the proper type of security. Symantec Messaging Gateway will stop spoofed email automatically. However, if you have Symantec Mail Security, you'll have to check your settings to verify that they aren't contributing to the problem.

Things You'll Need

• Symantec Mail Security

Instructions

1. Click "Policies" in the Symantec Mail Security for Microsoft Exchange, or SMSMSE, console. Click "Antispam" and then click "Blacklist and Whitelist." Check that your domain is not listed in the Allowed Senders box. If your domain is listed, delete it and then click "Deploy Changes."

2. Check that the email addresses receiving spoofed email are not listed in the Unfiltered Recipients List box. If your email is listed, delete it and then click "Deploy Changes."

3. Click "Policies" in the SMSMSE console, then click "Antispam" and "Premium Antispam Settings."

4. Select all of the items under "Reputation Services."

Tips & Warnings

• If you still receive spoofed email, send the spam messages to Symantec Security Response (see link in Resources).

References

• Symantec: Is It Possible to Stop Spoofed Email (Spam) Using Symantec Mail Security for Microsoft Exchange?
• Symantec: Symantec Mail Security for Microsoft Exchange
• Symantec: Symantec Messaging Gateway Powered by Brightmail

Resources

• Symantec: Manually Submitting Spam and False Positive Messages to the Symantec Security Response Center