Topic: IMAP/PO3 not working AFTER upgrading dovecot
==== Required information ====
- iRedMail version (check /etc/iredmail-release): Latest
- Linux/BSD distribution name and version: CENTOS 7
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Web server (Apache or Nginx): Nginx
- Manage mail accounts with iRedAdmin-Pro? Yes
- Related log if you're reporting an issue:
====
Just upgraded dovecot from 2.2.27 tp 2.2.28 now IMAP/POP stopped working
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