Hi , I have just migrated to Exchange 2007 and co-exist with exchange 2003, when my users from other domain controllers try to login using UPN to OWA ended up error exactly similar to the one posted below, for simplicity , I won't inlclude the entrire error message. users from the DC where the exchange is installed have no issues, I heard that Exchange 2007 has problems with UPNs, is it the issue here? I have exhausted with all the solutions posted in the forum, all seems to be fine Request Url: https://fe22.seexchange.corp.com.sg:443/owa/lang.owa User host address: 116.17.253.112 Exception Exception type: Microsoft.Exchange.Data.Storage.StoragePermanentException Exception message: There was a problem accessing Active Directory. Call stack on the other hand I found the following in my front end event logs, these are the domain controllers is there any connection to this info?? Event Type: Information Event Source: MSExchange ADAccess Event Category: Topology Event ID: 2080 Date: 9/26/2008 Time: 6:23:30 PM User: N/A Computer: FE11 Description: Process IISIPM209E54C1-FDD1-45F3-8EEE-7C37BEF45BAA -AP "MSEXCHANGEOWAAPPPOOL (PID=4996). Exchange Active Directory Provider has discovered the following servers with the following characteristics: (Server name | Roles | Enabled | Reachability | Synchronized | GC capable | PDC | SACL right | Critical Data | Netlogon | OS Version) In-site: ad2.seexchange.corp.com.sg CDG 1 7 7 1 0 1 1 7 1 ad1.seexchange.corp.com.sg CDG 1 7 7 1 0 1 1 7 1 SeHQad1.se.corp CDG 1 7 7 1 0 0 1 7 1 SeAppAD1.Seapp.corp CDG 1 7 7 1 0 0 1 7 1 SetilAD2.setil.corp CDG 1 7 7 1 0 0 1 7 1 sembutilad1.setil.corp CDG 1 7 7 1 0 0 1 7 1 sehqad2.se.corp CDG 1 7 7 1 0 0 1 7 1 seappad2.Seapp.corp CDG 1 7 7 1 0 0 1 7 1 seemad1.seviro.corp CDG 1 7 7 1 0 0 1 7 1 seemad3.seviro.corp CDG 1 7 7 1 0 0 1 7 1 seutilcn2.seutil.corp CDG 1 7 7 1 0 0 1 7 1 seutilcn3.seutil.corp CDG 1 7 7 1 0 0 1 7 1 seutilcn1.seutil.corp CDG 1 7 7 1 0 0 1 7 1

Hi, I would like to confirm whether all the users have this issue or just part of user. Whether you can access OWA through user name? It seems that this is a known issue, please verify whether the below resolution can work out this issue. http://support.microsoft.com/default.aspx?scid=kb;EN-US;949527 Thanks Allen