Hi, I am using Exchange 2003 Exchange System Microsoft Corporation Version: 6.5.7638.1 -- > Trying to create a new System Policy For Mailbox Store however strangely when it comes to adding the mailbox store it can't do that -- > The screenshots in the link below would explain better, I really hope I could upload them to the site itself but can't so please click the link below for the issue https://skydrive.live.com/view.aspx?cid=AC90F2CDB394D9E7&resid=AC90F2CDB394D9E7%21113 System Policy does not show Mailbox Sto Exchange server -- > unity-sec -- > nslookup works fine C:\Documents and Settings\unityinstall>nslookup unity-sec DNS request timed out. timeout was 2 seconds. *** Can't find server name for address 192.168.2.96: Timed out Server: UnKnown Address: 192.168.2.96 Name: unity-sec.voiceLab.com Address: 192.168.2.96 C:\Documents and Settings\unityinstall> -- > Server unity-sec is acting as DC and GC as well -- > AD replication shows good as well C:\Program Files\Support Tools>repadmin /showrepl repadmin running command /showrepl against server localhost Default-First-Site-Name\UNITY-SEC DC Options: IS_GC Site Options: (none) DC object GUID: 818cf5b1-4130-435b-8bb3-00adc314c9cd DC invocationID: 818cf5b1-4130-435b-8bb3-00adc314c9cd ==== INBOUND NEIGHBORS ====================================== DC=voiceLab,DC=com Default-First-Site-Name\EX2010 via RPC DC object GUID: e542cac7-5c98-43c7-bc64-7b14cbb6ebf8 Last attempt @ 2011-09-02 05:38:43 was successful. CN=Configuration,DC=voiceLab,DC=com Default-First-Site-Name\EX2010 via RPC DC object GUID: e542cac7-5c98-43c7-bc64-7b14cbb6ebf8 Last attempt @ 2011-09-02 05:30:38 was successful. Default-First-Site-Name\UNITY11 via RPC DC object GUID: 68590d92-9f67-4cee-b21d-c866150ec8b9 Last attempt @ 2011-09-02 05:30:56 was successful. CN=Schema,CN=Configuration,DC=voiceLab,DC=com Default-First-Site-Name\EX2010 via RPC DC object GUID: e542cac7-5c98-43c7-bc64-7b14cbb6ebf8 Last attempt @ 2011-09-02 05:23:27 was successful. Default-First-Site-Name\UNITY11 via RPC DC object GUID: 68590d92-9f67-4cee-b21d-c866150ec8b9 Last attempt @ 2011-09-02 05:23:27 was successful. DC=DomainDnsZones,DC=voiceLab,DC=com Default-First-Site-Name\EX2010 via RPC DC object GUID: e542cac7-5c98-43c7-bc64-7b14cbb6ebf8 Last attempt @ 2011-09-02 05:23:27 was successful. DC=ForestDnsZones,DC=voiceLab,DC=com Default-First-Site-Name\EX2010 via RPC DC object GUID: e542cac7-5c98-43c7-bc64-7b14cbb6ebf8 Last attempt @ 2011-09-02 05:23:27 was successful. Default-First-Site-Name\UNITY11 via RPC DC object GUID: 68590d92-9f67-4cee-b21d-c866150ec8b9 Last attempt @ 2011-09-02 05:23:27 was successful. DC=child,DC=voiceLab,DC=com Default-First-Site-Name\UNITY11 via RPC DC object GUID: 68590d92-9f67-4cee-b21d-c866150ec8b9 Last attempt @ 2011-09-02 05:23:27 was successful. C:\Program Files\Support Tools> Find A Way, Or, Make A Way...........

Hi Pradipto, Please run EXBPA, dcdiag and netdiag to retieve more information post here, then we could do more research about it. Per the issue, it seems that the server could not connect to the mailbox stroe. There must be some issue with your exchange server. I also do some tests in my lab, everything work well. Regards! Gavin