I need to setup a Chat Server on Linux which can support 1000 users at a time.I do need few features like Saving Chat Session like in MS Outlook > Save As. I too need features like Integrating this Chat Server to Windows Active Directory LDAP Server so that users can login to this Chat Server through this already setup LDAP Server on Windows Server.
Do suggest me if there is any chat server who can help me quipped with this features?

Jabber will, as a quick Google search turns up. There are also links to folks who have gotten it going with AD, too.

or and irc server, i read a while back, that some of them have full ad support

Senior TBOne, Jabber seems to be acquired by Cisco.
BAd News !!!

I have ARSC Installed. But I need to add few feature like Save Chat Session.Will it be possible through arsc.
Suggest any other tool pls?

Hows Xchat?

xChat is a client, not server.

I was in Ubuntu IRC Chat and they mentioned "Ejabberd" as the Wonderful Chat Server and "Xchat" as Client.
What you guys suggest?

I use inspircd as my irc server, admittedly I never needed anything close to 1000 users, so I can't comment on its scalability, but as far as I know, it should do fine as long as your network can handle the amount of traffic. It supports zlib which can help with that. It also supports ldap and a number of database formats, as well as openssl and gnutls for encryption. You can use bitlbee as a bridge to jabber if you also require jabber support.

About the "save" stuff option, that's usually client-side, and not server-side, I don't think that you truly want to save the whole chatlog on your server, personal stuff doesn't really belong into the server. Though I think it's supported as well. But, as said, I'd rather do that on the client side.

jabber server or irc server can handle what you wish.

Only bad news, if you don't bother looking around.

Jabber is an implementation of the XMPP protocol. While jabber may have been acquired, there are open-source alternatives that use it. Openfire is one of them, and uses a wide variety of standard Jabber clients.

http://www.igniterealtime.org/projec...fire/index.jsp

And spell out your words, please.

Thats Pretty Good..I installed openfire , SparkWeb and MySQL Database that did more than What I want.
What a Superb Tool is OpenFire.
Hats Off to OpenFire !!!
I can see it supporting 2000+ Users.