==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 1.3.2
- Deployed with iRedMail Easy or the downloadable installer?downloadable installer
- Linux/BSD distribution name and version: Debian 10
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Web server (Apache or Nginx):Nginix
- Manage mail accounts with iRedAdmin-Pro?iRedAdmin-Pro 4.7
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

We have installed  iRedAdmin-Pro-SQL-4.7 and now frequently we are facing the issue of  internal server error while accessing admin panel and at the same  mail server stops working. We have to manually restart dovecot service then it starts working. We dont know why and when it stops working. Posting below the dovecot log.
Jan  2 14:53:36 mail dovecot: dict(27520): Error: mysql(127.0.0.1): Connect failed to database (vmail): Too many connections - waiting for 625 seconds before retry
Jan  2 14:53:36 mail dovecot: dict(27520): Error: mysql(127.0.0.1): Connect failed to database (vmail): Too many connections - waiting for 625 seconds before retry
Jan  2 14:53:36 mail dovecot: dict(27521): Error: mysql(127.0.0.1): Connect failed to database (vmail): Too many connections - waiting for 625 seconds before retry
Jan  2 14:53:36 mail dovecot: dict(27522): Error: mysql(127.0.0.1): Connect failed to database (vmail): Too many connections - waiting for 625 seconds before retry
Jan  2 14:53:36 mail dovecot: dict(27522): Error: mysql(127.0.0.1): Connect failed to database (vmail): Too many connections - waiting for 625 seconds before retry
Jan  2 14:53:36 mail dovecot: dict(27522): Error: mysql(127.0.0.1): Connect failed to database (vmail): Too many connections - waiting for 625 seconds before retry
Jan  2 14:53:36 mail dovecot: dict(27523): Error: mysql(127.0.0.1): Connect failed to database (vmail): Too many connections - waiting for 625 seconds before retry
Jan  2 14:53:36 mail dovecot: dict(27523): Error: mysql(127.0.0.1): Connect failed to database (vmail): Too many connections - waiting for 625 seconds before retry
Jan  2 14:53:36 mail dovecot: dict(27523): Error: mysql(127.0.0.1): Connect failed to database (vmail): Too many connections - waiting for 625 seconds before retry
Jan  2 14:53:36 mail dovecot: dict(27525): Error: mysql(127.0.0.1): Connect failed to database (vmail): Too many connections - waiting for 625 seconds before retry

We have created some email ids with custom path and some ids with default path. Please help me to resolve the issue.

Regards
Murali