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Topic: email clients disconnect from the iRedMail server

==== Required information ====
- iRedMail version (check /etc/iredmail-release): 0.9.4 and 0.9.5-1
- Linux/BSD distribution name and version: CentOS Linux release 7.2.1511
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Web server (Apache or Nginx): Apache
- Manage mail accounts with iRedAdmin-Pro? No
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

I have two iredmail mail servers (0.9.4 and 0.9.5-1). On these servers there is a problem - mail clients (MS outlook 2010, Thunderbird, the Bat) fall off from the server . The accounts type is IMAP.  So, in MS Outlook the inscription appears in the status bar-Disconnected. IMAP data becomes unavailable. But the server continues to work correctly through the web interface. This disable is fixed by closing and opening mail clients. This disconnection is unpredictable, maillog did not find suspicious entries in the logs. Please help to find the problem

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Re: email clients disconnect from the iRedMail server

How many mail accounts do you have on this server? do most of them use IMAP in MUA?

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Does my reply help a little? How about buying me a cup of coffee ($5) as an encouragement?

buy me a cup of coffee

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Re: email clients disconnect from the iRedMail server

15 accounts. Yes, use IMAP in MUA

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Re: email clients disconnect from the iRedMail server

Do all users connect to server from same public IP address (e.g. in same office)? If yes, it sounds like your public IP was blocked in iptables firewall (triggered by Fail2ban) on server. Please check iptables firewall rules (with command "iptables -L -n") to figure it out.

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Does my reply help a little? How about buying me a cup of coffee ($5) as an encouragement?

buy me a cup of coffee