TheWormsUnited hadjjo did you restarted the server? What type of Distro are you using? Seems to me that you have the port 25 closed, that is a Google Cloud instance?
TheWormsUnited hadjjo oh.. Debian.. aaPanel is recommended on CentOS and Ubuntu, Debian still has several issues. It might be one of those cases on Debian because installing the mail server should go smooth as 1, 2 3
aaPanel_Jose hadjjo Our mail server has only tested the compatibility of ubuntu and centos, debian we need to arrange time to test
hadjjo aaPanel_Jose im migrating to centos so i will move my whole project to use this system and your panel too looks promising 🙂 i have a problem i just posted about it please reply 🙂