CES Using a Windows AD to redirect to a new domain.

[Poutinebbq]

Greetings,

Our company sold one of our branch and only a specific OU needs to be redirected to a new domain while they complete a full turn-over with their clients and distributors.

Is there a way from the Hosted CES to query securily the AD for that particular OU container and apply a rule to change the domain part of the e-mail?

1. External mail comes in

2. Query AD for matching Name Rule.

3. Apply change of mail and forward to said domain + Send e-mail to sender a pre-made answer message for them to change their destination

In worst case scenario or if easier to do. I have an exported list of address to make a dictionary and use has trigger for rule. 

We are using Hosted CES and on site Exchange server.

Any help would be greatly appreciated.

Thank you

Mike.

[Ken Stieers]

If all of the users are in an AD group, you can create a mail policy to handle these users. This has the added advantage of splintering any mail that is sent to members and non-members.
Use a content filter to send a reply saying "use a different email address..." and then send the mail to an alternate destination host, both actions you can apply to all mail that hits this content policy.

[Poutinebbq]

Thank you for your answer Ken,

that sounded pretty easy and straight forward, i thought it would take more. (I have limited knowledge but learning )  I have forwarded the need to let the CES access the inside of the network to query the AD.   I think we can do it either with LDAP or SAML to achieve the same goal, correct?

[Ken Stieers]

Not with SAML. SAML is only for authentication, its not really "query-able" in the way you need.
If you can't get LDAP done, a policy is still the right way to go so you get splintering. Just add the list of addresses to the Recipient side of the policy definition.