==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 1.3.2
- Deployed with iRedMail Easy or the downloadable installer? downloadable installer
- Linux/BSD distribution name and version: Ubuntu 20.04
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): PGSQL
- Web server (Apache or Nginx): Both, with nginx forwarding to apache
- Manage mail accounts with iRedAdmin-Pro? no
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

if i use ubuntu's mail command on the command prompt while logged in as root, i can email the account i'm trying to reach, and the mail shows up in roundcube.

but when i try to email from an external (gmail) source, none of my mails arrive.

i've checked the DNS records through https://mxtoolbox.com/SuperTool.aspx?ac … n=toolpage and the correct IP shows up.
but when i use the SMTP check on that mxtoolbox.com, it shows that it could not connect after 15 seconds of trying.

i've enabled ports 25,587,993 in my ufw firewall setup

i've forwarded the ports 25, 587 and 993 in my internet modem to the correct machine.

also, when sending email from roundcube, it fails to connect to the smtp server.

i'd love to see these issues resolved soon..