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

The exchange sever in 1 domain: is the source server which contains email accounts and emails. The target exchange server: Both email servers reside separately in their respected domains. At this point exchange.1 is forwarding to exchange.2 & the question is: what's the easiest way to transfer these accounts plus email to the exchange.2?
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Tony GiangrecoCommented:
Acronis True Image 2019 just released!

Create a reliable backup. Make sure you always have dependable copies of your data so you can restore your entire system or individual files.

Mino DCCommented:
or this:

(pardon for only link, but in this moment I'm very busy)
Azeem PatelSystem AdministartorCommented:
Start the procedure as directed ... Report if any problem during migration.
sirius7Author Commented:
tried the migration wizard as follows:

on i migrated a mailbox to a .pst with success then
on 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:\' 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
sirius7Author Commented:
I ended up having to install outlook express to enable (install) a transportation protocol

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sirius7Author Commented:
right answer
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