Thank you for answer. But on old system is courier aprx 160 mail box - 150GB.
And I need to migrate it for 4 hours. Because need to start new system immediately after migration process.
If I will use courier on both systems - I only need to create the same users and to copy vmail folder it is all.
But if choose dovecot and migrate on it - it need much more time to migrate.
Need to copy each folder for each user.
May be you can to advise another steps for fast migration from courier to dovecot?
Thank you.
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