==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version - 0.9.9 MARIADB Edition
- Deployed with downloadable installer?
- Linux/BSD distribution name and version: CentOS 7
- Store mail accounts in which backend -MySQL
- Web server (Apache or Nginx):Nginx
- Manage mail accounts with iRedAdmin-Pro?- Yes
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

Hello I am receiving errors similar to the below all day long, this has been going on for a while but only a few a day, I am now getting upwards of 70 of these per day.  Nothing has changed in my environment, we haven't added additional users, etc. 

I have increased my net.ipv4.tcp_max_syn_backlog in /etc/sysctl.conf but that didn't seem to resolve the issue.  Has anyone else experienced this ? If so what did you do to fix it

Please let me know

ip.tcp_accept_queue
CHART
1m tcp accept queue overflows = 22.3 overflows
the number of times the TCP accept queue of the kernel overflown, during the last minute
ALARM
tcp
FAMILY
CRITICAL
SEVERITY
Fri Nov 15 14:50:06 EST 2019