transfer passwords

[kilburn]

The problem here is that mail passwords are encrypted, using a key that is generated during the installation. Since the key of the server you are transfering from does not match the key that the destination server uses, the latter can not decrypt the passwords correctly (it gets gibberish, and the user's would have to input this gibberish to actually log in).

The solution is to decrypt the mail passwords using the original server's key, and re-encrypt them using the destination server's key. See this thread for further information.