Restrict Send / Receive External Email in Exchange 2007

We have a client running Exchange 2007.  We want to restrict 50 users' email account to only be able to send and receive email within the company (Internally).  We do not want these users to be able to send email to anyone outside the company nor receive any email from outside of the company. I have experience with Exchange 200/2003 but very little in 2007.  Thanks for your help.
noelnesterAsked:
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.

NpatangCommented:
0
tigermattCommented:

Transport Rules are the way to go about doing this. These fire when an email goes through Exchange Transport (every email sent passes through transport).

Firstly, create a new distribution group. Add all the users who should not have access to external email into this group.
As per the above article, launch Exchange Management Console, go to Organisation Configuration, Hub Transport, Transport Rules.

Create a new rule. Set the conditions to be 'from a member of distribution list' AND 'sent to users outside the organisation'. Specify the new distribution group you created.
Press Next, then enable 'Send Bounce Message to Sender'.

Create a new rule and repeat the procedure, picking 'sent to members of distribution list' and 'from users outside the organisation', setting the same action.

This will block all external email for members of the distribution group.

-Matt

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
tigermattCommented:
The transport rule approach described in http:#a24818093 will work.
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
Exchange

From novice to tech pro — start learning today.