On the 4D Mail, data is stored in Post Office. Each Post Office on the 4D server covers one or multiple SMTP domains. Migration tools create one domain in Kerio MailServer for each Post Office. The domain name will match with the first SMTP domain detected in the migrated Post Office (the first domain name found in the configuration for this Post Office).
The other Local Mail Domains associated with the migrated Post Office will be added to Kerio MailServer as aliases to the created SMTP domain. If the SMTP domain already exists in Kerio MailServer, it will not be modified and it will be skipped. If there already exists a domain matching a migrated domain or an alias to an existing domain, migration of such a domain fails.
Migration tools create a Kerio MailServer account for each user migrated. For new accounts, the password identical with passwords at 4D Mail will be set. For a successful migration, migrated users need a valid password and it is also necessary that login to the IMAP service is enabled.