==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 1.8.2
- Deployed with iRedMail Easy or the downloadable installer? downloadable installer
- Linux/BSD distribution name and version: Ubuntu 24.04
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Web server (Apache or Nginx):nginx
- Manage mail accounts with iRedAdmin-Pro?
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

2026-06-22T07:07:32.576925+00:00 mail postfix/smtpd[388043]: connect from bg1.exmail.qq.com[114.132.73.137]
2026-06-22T07:07:32.620463+00:00 mail postfix/smtpd[388043]: discarding EHLO keywords: CHUNKING
2026-06-22T07:07:32.819446+00:00 mail postfix/smtpd[388043]: Anonymous TLS connection established from bg1.exmail.qq.com[114.132.73.137]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
2026-06-22T07:07:32.967670+00:00 mail postfix/smtpd[388043]: discarding EHLO keywords: CHUNKING
2026-06-22T07:07:33.409815+00:00 mail postfix/smtpd[388043]: 4gkK5d2rXVzWg98: client=bg1.exmail.qq.com[114.132.73.137]
2026-06-22T07:07:33.547703+00:00 mail postfix/cleanup[388066]: 4gkK5d2rXVzWg98: message-id=<mis_33F71FEF4DF9EA35360F6619@exmail.weixin.qq.com>
2026-06-22T07:07:33.553916+00:00 mail postfix/qmgr[278081]: 4gkK5d2rXVzWg98: from=<10000@exmail.weixin.qq.com>, size=17755, nrcpt=1 (queue active)
2026-06-22T07:07:33.582693+00:00 mail postfix/smtpd[388043]: disconnect from bg1.exmail.qq.com[114.132.73.137] ehlo=2 starttls=1 mail=1 rcpt=1 data=1 quit=1 commands=7
2026-06-22T07:07:33.600267+00:00 mail amavis[2470]: (02470-02) NOTICE: reconnecting in response to: err=2013, HY000, DBD::mysql::st execute failed: Lost connection to MySQL server during query at /usr/share/perl5/Amavis/Out/SQL/Connection.pm line 175.