I am running a terminal server using server 2008 R2 is there a built in instant messaging service withing just server 2008? we are running exchange 2010 but not all of our users are liscensed to use it, as some do not need it.

is there a microsoft application or a freeware 3rd party app that we could get to do IM's within the network across different subnets and through VPNs?

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Hi Geig,
Office Communicator / Lync is the most effective IM client I have implimented so far on a system. That being said you do need to ensure your exchange users are licensed for it to work. I would suggest speaking with your local microsoft licensing rep for
information on licensing as there are several licensing options available such as upgrade advantage or perpetual, depending on your needs, there might be a cheaper route.
In relation to your question on freeware alternatives, I have installed such a setup for a school in the past who were extremely low budget, although not as good as Office Communicator/Lync, it is simplistic. The server software is called OpenFire (
http://www.igniterealtime.org/projects/openfire/
)
and the computer IM clients is called Spark (
http://www.igniterealtime.org/downloads/index.jsp
). Both Server and Client will install on Windows systems and I think OpenFire server will connect via Active Directory meaning you can make use of the users in AD
and also LDAP.
There is some good documentation on that site of how to install/impliment/and maintain it. It is simple enough to install.

Just some value added advice, If you intend to use openfire, ensure that instead of using the server IP for the server address on the client, instead create a dns entry on your company DNS server (e.g. messenger.mycompany.com) that way it allows you to fail
across servers without having to go change IP addresses on all clients. Also you can add the relevant porting to your firewall and DNS to allow the messenger be accessed externally if desired, hence meaning (messenger.mycompany.com) will be accessible both
internally via 10.0.0.220:port and externally via x.x.x.x:port where x.x.x.x is the static IP.

Best of luck with it.
Martin
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Hi Geig,
Just to add to my last response. If folks at your office use smartphones, there is an IM+ app that can connect to the messenger while they are on the go. I have it installed on my personal iPhone and it works great. Any jabber compatible app should work
once configured properly.

Martin
If you find my information useful, please rate it. :-)

There is an amazing pack of free network admin tools. click here to download it

Hi Geig,
Just to add to my last response. If folks at your office use smartphones, there is an IM+ app that can connect to the messenger while they are on the go. I have it installed on my personal iPhone and it works great. Any jabber compatible app should work
once configured properly.

Martin
If you find my information useful, please rate it. :-)

Need to support users over the internet? click here try our remote control online beta