Having trouble with emails

Hello,

I have moved one of website from a cpanel server. Everything is working great except email. I can't connect to IMAP or roundcoube. I saw that when I have created an mailbox nothing is creating under "/var/vmail/" so I added directory manually there & changed ownership to "vmail.mail" but still nothing happening.

roundcube log:
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[15-Sep-2017 08:47:16 +0000]: <d5arg2cv> IMAP Error: Login failed for admin@hoicoimasti.com from 43.239.158.7. AUTHENTICATE PLAIN: Temporary authentication failure. in /usr/local/cwpsrv/var/services/roundcube/program/lib/Roundcube/rcube_imap.php on line 193 (POST /?_task=login&_action=login)
[15-Sep-2017 08:48:05 +0000]: <d5arg2cv> IMAP Error: Login failed for admin@hoicoimasti.com from 43.239.158.7. AUTHENTICATE PLAIN: Temporary authentication failure. in /usr/local/cwpsrv/var/services/roundcube/program/lib/Roundcube/rcube_imap.php on line 193 (POST /?_task=login&_action=login)
[15-Sep-2017 08:55:06 +0000]: <d5arg2cv> IMAP Error: Login failed for admin@hoicoimasti.com from 43.239.158.7. AUTHENTICATE PLAIN: Temporary authentication failure. in /usr/local/cwpsrv/var/services/roundcube/program/lib/Roundcube/rcube_imap.php on line 193 (POST /?_task=login&_action=login)
[15-Sep-2017 09:45:11 +0000]: <uuggci7h> IMAP Error: Login failed for admin@hoicoimasti.com from 43.239.158.7. AUTHENTICATE PLAIN: Temporary authentication failure. in /usr/local/cwpsrv/var/services/roundcube/program/lib/Roundcube/rcube_imap.php on line 193 (POST /?_task=login&_action=login)
[15-Sep-2017 09:45:11 +0000]: <uuggci7h> DB Error: [1054] Unknown column 'failed_login' in 'field list' (SQL Query: UPDATE `users` SET `failed_login` = '2017-09-15 09:45:11', `failed_login_counter` = 1 WHERE `user_id` = '12') in /usr/local/cwpsrv/var/services/roundcube/program/lib/Roundcube/rcube_db.php on line 539 (POST /?_task=login&_action=login)
[15-Sep-2017 11:46:23 +0000]: <rr67qfij> IMAP Error: Login failed for admin@hoicoimasti.com from 43.239.158.7. AUTHENTICATE PLAIN: Temporary authentication failure. in /usr/local/cwpsrv/var/services/roundcube/program/lib/Roundcube/rcube_imap.php on line 193 (POST /roundcube/?_task=login&_action=login)
[15-Sep-2017 11:46:23 +0000]: <rr67qfij> DB Error: [1054] Unknown column 'failed_login' in 'field list' (SQL Query: UPDATE `users` SET `failed_login` = '2017-09-15 11:46:23', `failed_login_counter` = 1 WHERE `user_id` = '12') in /usr/local/cwpsrv/var/services/roundcube/program/lib/Roundcube/rcube_db.php on line 539 (POST /roundcube/?_task=login&_action=login)
[15-Sep-2017 12:14:03 +0000]: <utrds6fm> IMAP Error: Login failed for admin@hoicoimasti.com from 43.239.158.7. AUTHENTICATE PLAIN: Temporary authentication failure. in /usr/local/cwpsrv/var/services/roundcube/program/lib/Roundcube/rcube_imap.php on line 193 (POST /?_task=login&_action=login)
[15-Sep-2017 12:32:56 +0000]: <utrds6fm> IMAP Error: Login failed for admin@hoicoimasti.com from 43.239.158.7. AUTHENTICATE PLAIN: Temporary authentication failure. in /usr/local/cwpsrv/var/services/roundcube/program/lib/Roundcube/rcube_imap.php on line 193 (POST /?_task=login&_action=login)
[15-Sep-2017 12:38:55 +0000]: <utrds6fm> IMAP Error: Login failed for admin@hoicoimasti.com from 43.239.158.7. AUTHENTICATE PLAIN: Temporary authentication failure. in /usr/local/cwpsrv/var/services/roundcube/program/lib/Roundcube/rcube_imap.php on line 193 (POST /?_task=login&_action=login)
dovecot.log:
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Sep 15 20:44:39 master: Error: service(auth-worker): child 10052 killed with signal 11 (core dumps disabled)
Sep 15 20:44:39 auth: Error: auth worker: Aborted request: Worker process died unexpectedly
Sep 15 20:44:39 auth-worker: Error: Character set 'utf8mb4' is not a compiled character set and is not specified in the '/usr/share/mysql/charsets/Index.xml' file
Sep 15 20:44:39 auth: Error: mysql: Connect failed to localhost (postfix): Can't initialize character set utf8mb4 (path: /usr/share/mysql/charsets/) - waiting for 1 seconds before retry
Sep 15 20:44:40 auth-worker: Error: Character set 'utf8mb4' is not a compiled character set and is not specified in the '/usr/share/mysql/charsets/Index.xml' file
Sep 15 20:44:40 auth: Error: mysql: Connect failed to localhost (postfix): Can't initialize character set utf8mb4 (path: /usr/share/mysql/charsets/) - waiting for 5 seconds before retry
Sep 15 20:44:45 auth-worker: Error: Character set 'utf8mb4' is not a compiled character set and is not specified in the '/usr/share/mysql/charsets/Index.xml' file
Sep 15 20:44:45 auth: Error: mysql: Connect failed to localhost (postfix): Can't initialize character set utf8mb4 (path: /usr/share/mysql/charsets/) - waiting for 25 seconds before retry
Sep 15 20:45:10 auth-worker: Error: Character set 'utf8mb4' is not a compiled character set and is not specified in the '/usr/share/mysql/charsets/Index.xml' file
Sep 15 20:45:10 auth: Error: mysql: Connect failed to localhost (postfix): Can't initialize character set utf8mb4 (path: /usr/share/mysql/charsets/) - waiting for 125 seconds before retry
Any suggestion? Thanks in advance

what mysql version do you have and have you made any custom modifications to cwp or server services ?

also check that all files are folder have the correct owner

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chown -R vmail.mail /var/vmail

Thanks for your reply @studio4host.

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MySQL version: 10.1.26-MariaDB
CWPpro version: 0.9.8.270
 
No, I didn't make any customization. I ran that command for correcting ownership but still no luck

No one to help me please

the best would be that you contact the support since this issue should be checked by sysadmin with experience.