Before we get started, we should point out that we have not tested this in practice. We are only basing this on public information (primarily from this article). Yet, it sounds reasonable, and feel free comment below and correct us.
Similar to both Dovecot and Microsoft Exchange, Mirapoint Message Server also support logging into users’ accounts via the admin account by using a modified username-string.
The username string Mirapoint Message Server is using for admin-authentication looks as follows:
#user@example.com#AdminUserName#Hence, if your admin-account is ‘jdoe’, and you’re trying to access the account ‘jsmith@example.com’, your string would look like this:
#jsmith@example.com#jdoe#Before you move forward with the migration, make sure you can login using this method (the custom username-string mentioned above, along with the admin-password) using a desktop client, like Thunderbird, or using OpenSSL as we did in the Dovecot-guide.
Once you’ve verified that you can login, you can proceed with your YippieMove e-mail migration. You can either do a single-migration, or use the batch-migration tool.
If you got any questions, please let us know either by contacting the support or comment below.

