Operating system Ubuntu Linux 20.04.4
Webmin version 1.994
Usermin version 1.840
Sorry - I posted this in the wrong place the first time.
I tried restoring a virtual server from an old server running virtualmin to a new one. Nothing worked.
I have recreated the virtual server on the new instance of virtualmin. I copied the website via duplicator - all good.
I recreated the email accounts, and restored the old Maildirs I checked the permissions and deleted old dovecot* files from the Maildir in each case.
Only 1 out of 4 accounts could load the old restored email. The other 3 show the disk usage, but in usermin, the inboxes are empty. The emails are in the appropriate directory (cur, etc.), but are not loaded by the usermin client.
Any clues on how to get mail client to see the restored emails?