==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): iRedMail Enterprise Edition:2025090801
- Deployed with iRedMail Easy or the downloadable installer?Yes
- Linux/BSD distribution name and version: Distributor ID: Ubuntu
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): Backend: mariadb
- 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.
====
Hi all,

My mail queue keeps filling up, and outgoing messages get stuck. Sometimes they send after hours, sometimes they just stay in the queue. I'm not sure if it's DNS, Postfix settings, or something else.

Has anyone dealt with this before? How do you usually troubleshoot a mail queue that won't clear?

Thanks.