How do I migrate emails and accounts from one exchange server to another?

Here are suggestions that might resoove your problem:
http://forums.msexchange.org/m_1800450281/mpage_1/tm.htm
http://forums.msexchange.org/m_1800534124/mpage_1/key_/tm.htm

you can see this discussion:

https://www.experts-exchange.com/questions/22470795/Migrate-mailbox-to-different-Exchange-Org.html

or this article:
http://www.computerperformance.co.uk/exchange2003/exchange_2003_ADC.htm

or this:
http://forums.msexchange.org/m_1800545423/mpage_1/tm.htm

(pardon for only link, but in this moment I'm very busy)

and see this articles
 http://us.generation-nt.com/move-exchange-mailboxes-one-domain-another-help-107399822.html

http://itknowledgeexchange.techtarget.com/itanswers/migration-move-a-user-form-one-domain-child-domain-to-another-domain-parent-domain/

Start the procedure as directed ... Report if any problem during migration.

tried the migration wizard as follows:

on exchange.1.com i migrated a mailbox to a .pst with success then
on exchange.2.com i migrated a mailbox to a .pst with failure. below is a copy of the log file:


****************************************************************
Microsoft Exchange Mailbox Merge Program, v6.5.7082.0
Start Logging:January 04, 2012   10:42:37
****************************************************************
[10:42:37] Logging Level: None
[10:42:37] Current machine locale ID is 0x409
[10:42:37] Operating System Version 5.2 (Build 3790)
[10:43:59] Accessing Domain Controller 'EXCHANGE'
[10:43:59] 'EXCHANGE' is running Exchange Server 2000 or later
[10:44:00] Mailbox '/o=KSH Solutions/ou=First Administrative Group/cn=Configuration/cn=Servers/cn=EXCHANGE/cn=Microsoft System Attendant' will be ignored as its DN contains strings in the ignore list
[10:44:00] Mailbox '/o=Company Name/ou=First Administrative Group/cn=Configuration/cn=Connections/cn=SMTP (EXCHANGE)/cn={9F7D6DF1-6B74-4476-8D8A-FAC56AB876FC}' will be ignored as its DN contains strings in the ignore list
[10:44:00] Mailbox '/o=KSH Solutions/ou=First Administrative Group/cn=Recipients/cn=SystemMailbox{9F7D6DF1-6B74-4476-8D8A-FAC56AB876FC}' will be ignored as its DN contains strings in the ignore list
[10:44:00] Found 9 mailbox(es) homed on database 'FIRST STORAGE GROUP/MAILBOX STORE (EXCHANGE)'.
[10:44:00] Ignored 3 mailbox(es) homed on database 'FIRST STORAGE GROUP/MAILBOX STORE (EXCHANGE)'.
[10:44:00] Found 9 mailbox(es) homed on the specified databases.
[10:44:00] Ignored 3 mailbox(es) homed on the specified databases.
[10:44:24] Program settings successfully saved.
[10:44:26] Using attribute 'PR_MESSAGE_DELIVERY_TIME' for date operations.
[10:44:26] Copying data to target store. The program will copy all messages from the source store to the target store, without checking whether the messages already exist in the target store.
[10:44:26] Associated folder data will NOT be copied to the target store.
[10:44:26] Using 'English (US)' (0x409) as the default locale (Code page 1252)
[10:44:26] All mailboxes will be processed, regardless of locale
[10:44:26] Using last logon locale for all mailboxes, if possible
[10:44:26] Initializing worker thread (Thread0)
[10:44:26] Merging data from file 'C:\user.one.PST' to mailbox 'User One' ('USER.ONE') on server 'EXCHANGE'.
[10:44:26] Error. File 'C:\USER.ONE.PST' not found. Cannot merge data into mailbox for user 'User One' ('USER.ONE').
[10:44:26] Errors encountered. Copy process aborted for mailbox 'USER ONE' ('USER.ONE').
[10:44:27] Number of items copied from the source store for all mailboxes processed: 0
[10:44:27] Total number of folders processed in the source store: 0
[10:44:27] 0 mailboxes successfully processed. 1 mailboxes were not successfully processed. 0 non-fatal errors encountered.
[10:44:27] Process completion time: 00:00:00

right answer