Users keep getting emails from them selves...

Hi,
I administer a small network of about 100 users all with their own email addresses, and recently I have had a few calls from users who are getting spam emails from their own email address..  mainly stuff like, the usual..  sex, viagra, etc, etc..  I have already blocked as many phrases as I can to try and stop these mails getting through, but how do I stop mails coming from their own address...  either through sophos puremessage or even exchange 2003.   Baffled..  any help would be greatly appriciated..

Thanks

Darren.  
dazzzorAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Jamie McKillopIT ManagerCommented:
Hello,

This is a common spammer trick. You won't be able to prevent this with Exchange. You will need some type of third-party anti-spam software.

JJ
0
dazzzorAuthor Commented:
thanks jj
I use sophos anti-virus business console which comes with puremessage email filter..  do you know how I would do this..??

Darren
0
Alan HardistyCo-OwnerCommented:
Please read my EE Article for ways to prevent this without resorting to 3rd party software:
http://www.experts-exchange.com/articles/Software/Server_Software/Email_Servers/Exchange/How-to-prevent-Spoofed-Emails-in-Exchange-2003.html
0
millsclCommented:
Postini could stop this.  It is a spammer trick to get by the filters.

Other third party products may work and be cheaper.  YMMV.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Alan HardistyCo-OwnerCommented:
You don't need 3rd party software as long as you have Exchange 2003 Service Pack 2 installed, you just need to configure the built-in tools as per my article:
http://www.experts-exchange.com/articles/Software/Server_Software/Email_Servers/Exchange/How-to-prevent-Spoofed-Emails-in-Exchange-2003.html 
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
AntiSpam

From novice to tech pro — start learning today.