Server Fault is a question and answer site for system and network administrators. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Currently my server running on Windows 2003 with MERAK(IceWarp) Email Exchange install.

Email Spoofing happen across entire email domain network. How can I stop & prevent email spoofing happen?

share|improve this question
up vote 2 down vote accepted

On page 44 of the "Anti Spam – Best Practices" IceWarp white paper (PDF):

To make certain that someone cannot breach the system and send messages to server accounts via the server domain name, administrators should select the option, “Reject if originators domain is local and not authorized.” This option prohibits spammers from spoofing legitimate accounts such as PostMaster and Admin, and will eliminate uncertainty in the end user.

share|improve this answer
Thanks for the advise. – Simon Jun 25 '09 at 4:05

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.