Question/Issue:
List of public Instant Messaging servers for IM Manager DNS redirection setup.

Symptoms:
One of the suggested ways of implementing Symantec IM Manager is to utilize DNS Redirection. This setup is detailed in the DNS and Networking Guide in IM Manager 7.5 & 8.0, and in the IM Manager Implementation Guide in versions 8.1 and beyond. When the public IM networks update software or networks, they sometimes introduce new hostnames or protocol information. This new information may not be contained within the documentation that shipped with the release of IM Manager. Please reference this KB for up to date information regarding public IM server information.

Solution:

IM Client	Domain Names	IP Address
AOL Instant Messenger	login.oscar.aol.com toc.oscar.aol.com ats.byoa.aol.com slogin.oscar.aol.com	Primary
	kdc.uas.aol.com	0.0.0.0
Yahoo Messenger	mcs.msg.yahoo.com scs.msg.yahoo.com scsa.msg.yahoo.com scsb.msg.yahoo.com scsc.msg.yahoo.com scsd.msg.yahoo.com scse.msg.yahoo.com scsf.msg.yahoo.com scsg.msg.yahoo.com scsh.msg.yahoo.com cn.scs.msg.yahoo.com	Primary
	relay.msg.yahoo.com vcs.msg.yahoo.com vcs1.msg.yahoo.com vcs2.msg.yahoo.com	Secondary
MSN Messenger MSN Live Messenger Windows Messenger	messenger.hotmail.com	Primary
Google Talk	talk.google.com talkx.l.google.com	Primary
ICQ	login.icq.com	Primary

Further, Google Talk, MSN, and AOL require SSL authentication to specific servers. This information is detailed in the KB: IM Clients require SSL Authentication to specified domains.

NOTE: AIM 6.X and higher requires DNS entry for the hostname provisioned with AOL. The DNS entry should point to the Primary IP address of the IM Manager server.

References:
Windows Application Event Log Contains Error Message: "Could not connect to server scsb.msg.yahoo.com (resolved to: 66.163.181.122) port 5050 to initiate Yahoo connection. Error code: 0x0000274d."
http://service1.symantec.com/SUPPORT/ent-gate.nsf/docid/2007111214470654

How to Redirect AOL, MSN, Yahoo, ICQ, Googletalk IM Clients to IM Manager Using a Windows Hosts File
http://service1.symantec.com/SUPPORT/ent-gate.nsf/docid/2007223164841598

Starting April 2008 Yahoo 8.X IM Clients Cannot Connect or are Bypassing IM Manager/SMS Appliance
http://service1.symantec.com/SUPPORT/ent-gate.nsf/docid/2008040409223654

ICQ 6.X IM Client Cannot Login Through IM Manager

Document ID: 2007645475208898
Last Modified: 10/16/2009
Date Created: 12/09/2006
Product(s): IM Manager
Release(s): IM Manager 2007 8.3, IM Manager 7.5, IM Manager 8, IM Manager 8.1, IM Manager 8.2, IM Manager 8.4