I checked the maintenance of my email server today and the system status says that “Postgrey is not running (port 10023).” I look over the forum topic on this error and it says that all I have to do is type the command “sudo system postgrey start”.
I did what it said but the system status still states that “Postgrey is not running (port 10023).” And postgrey is still running according to the console of my server.
I also looked into the forum topic that people couldn’t receive incoming emails.
EDIT 1: I used this website as a guide and now all the system services are running. I’m still checking if it receive all the mails.
EDIT 2: Problem solved. I am letting this closed.