• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 490
  • Last Modified:

Question on transport rules in Exchange

For the longest time we have been using Exchange Transport rules to block a particular group of users from sending and receiving emails to and from the Internet. The rule would read something like, if sent from a member of this DL and destined for the outside, send an NDR back to the user unless it is to a particular address in another DL, then let it go. (exceptions). We did the same thing for receiving inbound Internet email using the same logic.

 This has worked for years and recently we have been purchased by another company and they want to be able to send and receive emails to and from these users. The problem I am having is the rule only allows for individual email addresses to be added as exceptions, not entire domains and since this company has thousands of users, I certainly can't list individual addresses as exceptions to these rules.

 I can't add the domain as an accepted domain in Exchange because we do not receive email for it. For now, I had to disable the transport rules until we can think of a better solution. Does anyone have any ideas on how to best handle this? We are running Exchange 2010 SP1.
1 Solution
imkotteesSenior Messaging EngineerCommented:

when you are creating a transport rule you could find a condition "sent to users that are inside or outside the organization, or partners" try this out.
Rajitha ChimmaniCommented:
Try the options below.

1. Adding *domain.com to the exceptions (OR)
2. Create mail contacts for the addresses in this new company, hide them from GAL and add all the contacts to a group. Add that group to the exceptions list.
osiexchangeAuthor Commented:

I can't add *.domain to the exceptions. The exceptions are nothing more than a DL with contacts and I can't give a contact *.domain as an email address. I know I can create Contacts for all the exceptions but that is not possible since this company has 20,000 users.
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Featured Post

Creating Active Directory Users from a Text File

If your organization has a need to mass-create AD user accounts, watch this video to see how its done without the need for scripting or other unnecessary complexities.

Tackle projects and never again get stuck behind a technical roadblock.
Join Now