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Transend migrates Zimbra email, calendars, contacts and tasks using a combination of IMAP for email and Zimbra’s built-in SOAP API for calendars, contacts and tasks. Those are the preferred migration methods for each respective data type, and are set as default protocols in Transend Migration Console.
You will need to know the address of your Zimbra server and administrator credentials to perform an administrator driven migration that does not require end-user passwords.
IMAP: Port 993
It may be necessary to supply the port number of the Zimbra server when migrating email via IMAP (usually 993).
This is done by appending :993 to the server name.
Zimbra API: Port 7071
It may be necessary to supply the port number of the Zimbra server (usually 7071).
This is done by appending :7071 to the server name.