Issue Mail Import tool errors

[HoracioS]

Hello, on Obsidian, when trying to import mailboxes via IMAP I got these errors:

Failed to connect to the source server and copy mail messages
Command execution failed on the local server with non-zero exit code.
command: /usr/local/psa/admin/plib/modules/site-import/backend/lib/python/parallels/core/extras/mail-migrator/linux/mail-migrator migrate --source-account-description-file=/usr/local/psa/var/modules/site-import/sessions/mail-migration-1/mail_migrator_source_account_2020-05-13-11-00-04-1_1 --source-message-ids-cache-file=/usr/local/psa/var/modules/site-import/sessions/mail-migration-1/mail_message_ids_cache.0d11534959991cfaa4ffa50814f2df3b --target-account-description-file=/usr/local/psa/var/modules/site-import/sessions/mail-migration-1/mail_migrator_target_account_2020-05-13-11-00-04-1_1 --backup-progress-file=/usr/local/psa/var/modules/site-import/sessions/mail-migration-1/mail_migrator_backup_progress_2020-05-13-11-00-04-1_1.json --restore-progress-file=/usr/local/psa/var/modules/site-import/sessions/mail-migration-1/mail_migrator_restore_progress_2020-05-13-11-00-04-1_1.json --source-ca-bundle=/usr/local/psa/admin/plib/modules/site-import/backend/lib/python/parallels/core/extras/cacert/cacert.pem --target-server-type=dovecot --source-host=195.201.113.101 --source-port=143 --source-timeout=60 --source-imap-protocol=imap --stop-mark-file=/usr/local/psa/var/modules/site-import/sessions/mail-migration-1/tasks/2020-05-13-11-00-04-1/stop
exit code: 1
stdout:
stderr: Failed to backup IMAP folder 'Public': Failed to select IMAP folder 'Public': EXAMINE command error: BAD ['[READ-ONLY] EXAMINE unable to open folder index.']. All messages of that folder will not be migrated

 

[IgorG]

Possibly incorrect permissions to the folder mentioned in the error message (here it is Public) on the source server.
Try to restore the default permissions on the source server:

# plesk repair mail example.com