what are the requirement (permission/port to be opened,etc.,) to move mailbox between adminsitrative groups (each administrative group in different domain)SAH

Depends on version of exchange. Move mailbox role. http://technet.microsoft.com/en-us/library/dd876879.aspx for 2010 it uses MRS 808 (TCP) Mailbox Replication Service uses to communicate 53 (TCP) DNS 135 (TCP) RPC End Point 389 (TCP) LDAP 3268 (TCP) LDAP 1024 > (TCP) if mailbox store is not statically configured then 1024 higher ports need to be open 88 (TCP) Kerberos 445 (TCP) Microsoft-DS Service (File sharing) 443 (TCP) Mailbox Replication Proxy service uses port 443 to communicate with other Exchange 2010 client access server via HTTPS. For 2003 almost same except for MRS. 53 (TCP) Domain Name Service (DNS) 88 (TCP) Kerberos 135 (TCP) Microsoft Remote Procedural Call (MS-RPC) 389 (TCP) Light Weight Directory Access Protocol (LDAP) 445 (TCP) Microsoft-DS Service 3268 (TCP) LDAP >1024 (TCP) If the Exchange store is statically configured, you must also open at least one port greater than 1024. James Chong MCITP | EA | EMA; MCSE | M+, S+ Security+, Project+, ITIL msexchangetips.blogspot.com

We have Exchange 2003 in both endSAH

http://technet.microsoft.com/en-us/library/aa998937.aspx check this

http://technet.microsoft.com/en-us/library/aa998937.aspx check this

<?xml version="1.0" encoding="unicode" ?> - <taskWizardRun taskName="Move Mailbox" dcName="FRPAFS1" buildNumber="7638" runningAs="hamshb@XXX.co.uk"> <timespan startTime="2012-07-23 12:49:00.342" milliseconds="22422" /> - <moveMailbox mixedMode="false" maxBadItems="0"> - <destination> <database>/dc=org/dc=XXX/cn=Configuration/cn=Services/cn=Microsoft Exchange/cn=XXX/cn=Administrative Groups/cn=AFSUK/cn=Servers/cn=XXX/cn=InformationStore/cn=XXX_SG4/cn=XXX_SG4_User11</database> </destination> </moveMailbox> <taskSummary errorCount="1" completedCount="0" warningCount="0" errorCode="0x00000000" /> - <items> - <item adsPath="Paris Mailbox Test" class="user"> <progress code="0" milliseconds="22390">Preparing mailbox to be moved.</progress> - <summary isWarning="false" errorCode="0xc1041721"> The action could not be completed because the Microsoft Exchange Information Store service is unavailable. Be sure the service is running and you have network connectivity to the Microsoft Exchange Server computer. - <details> - <source> <database>/dc=org/dc=XXX/cn=Configuration/cn=Services/cn=Microsoft Exchange/cn=XXX/cn=Administrative Groups/cn=France/cn=Servers/cn=FRPAEX4/cn=InformationStore/cn=First Storage Group/cn=Mailbox Store (FRPAEX4)</database> </source> </details> </summary> </item> </items> </taskWizardRun>

I added source exchange host name / IP in host (wise versa) file which resolve the issueSAH