How do I federate OCS IM with Live@edu, Windows Live, or AOL?

re: How do I federate OCS IM with Live@edu, Windows Live, or AOL?

mw — Wed, 14 Jul 2010 17:22:05 GMT

Sorry, that isnt going to work for us (and others) that have setup a "shared" mail domain then. Both live@edu and onsite exchange use the *same* domain @example.edu and this is a scenario MS support - however looks like choosing that route will make it impossible to federate IM from onsite OCS to live@edu.

The staff/student mail is seperated using our onsite MTA, there's no equivalent for IM's that I am aware of? We would have to make the live@edu users SIP addresses use the "hidden" domain @live.example.edu tenancy address that they have (but they don't know about, tis used just for us routing mail to them - (it is NOT their LiveID or outgoing mail address - they are both @example.edu), which would be plain akward to explain (if even possible).

re: How do I federate OCS IM with Live@edu, Windows Live, or AOL?

markga — Thu, 13 May 2010 23:35:04 GMT

mw,

Typically, your live@edu domain is something like:

students.ac.uk for students on Live@edu

and

ac.uk for faculty and staff

When you federate OCS with Windows Live/Live@edu and you use ac.uk as your OCS SIP domain, you ONLY have to evict the users who have associated ac.uk to a Windows LiveID. This number is usually low from what I have seen with edu customers. We do not evict/impact the Live@edu students.ac.uk domain.

Federation works based on SIP domain - when you configure federation and someone IMs a user on a commerical IM system the SIP traffic is routed correctly based on SRV records in DNS.

re: How do I federate OCS IM with Live@edu, Windows Live, or AOL?

mw — Thu, 13 May 2010 22:14:23 GMT

So, we run OCS onsite for staff with @blah.ac.uk as the SIP domain, our students are in live@edu and their LiveID's are @blah.ac.uk. When we reserved our domain for Live@Edu email we had to evict a few hundred users in order to create the 10's of thousands of student email accounts.

How does this fit with the point above about federating OCS to Live@Edu and having to evict people - have we already done this in effect?

How does federated IM traffic understand which system (the onsite staff one, or offsite Live@Edu student system) messages should be delivered in a split/shared domain scenario - it's not like MTA's in the email world with mail routing tables.