Have you recently migrated or is it something that has been working fine? Do you use DNS or WINS? Is the secure channel OK? Is the DC also a GC? Do the people who have problems authenticating members of the same domain or other child domains. Do you use certificate services? Mark Shevill IMG Messaging Technical Lead Shell Information Technology International Limited Rowlandsway, Wythenshawe, Manchester M22 5SB, United Kingdom Tel: +44 161 435 8709 Fax: +44 161 933 3502 Other Tel: +44 7932 625510 Email: Mark.Shevill@xxxxxxxxx Internet: http://www.shell.com -----Original Message----- From: suga1@xxxxxxxxxxxxxxx [mailto:suga1@xxxxxxxxxxxxxxx] Sent: 05 August 2003 07:26 To: [ExchangeList] http://www.MSExchange.org/ Hi Guys, We are having problems with an exchange 2k server, all services and exchange it's self seem fine, but users cannot authenticate (via Outlook, Outlook Express or OWA) on the server. The exchange server is a domain controller and we have two other DCs. Distribution lists, pointing to external email accounts and coming from external email accounts work fine. We had other instances of exchange 2k on our network (all Wink\2k servers) prior to this install. Any help/suggestions? Thoughts or ideas? Much appricated. Thanks. ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: Leading Network Software Directory: http://www.serverfiles.com No.1 ISA Server Resource Site: http://www.isaserver.org Windows Security Resource Site: http://www.windowsecurity.com/ Network Security Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: Mark.Shevill@xxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')