Topic: One of my users in a different country can't send mail, only receive.
==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 1.4.0 MariaDB
- Deployed with iRedMail Easy or the downloadable installer? Downloadable installer
- Linux/BSD distribution name and version: Ubuntu 20.04.2 LTS
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Web server (Apache or Nginx): Nginx
- Manage mail accounts with iRedAdmin-Pro? No
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue. Attached
====
I have one user in Czechia, and I'm in Turkey. I can send and receive emails on both their and my account just fine, but when they try to send me an email, roundcube gets stuck on sending, and doesn't send anything.
The VPS the server is hosted in is located in the US.
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