[SOLVED] Plesk, incoming email not received

Plesk, incoming email not received

Here is the scenario, I have plesk server running on a public IP. I have have a domain pointing to that IP. screenshot

I used mxtoolbox.com which told, my mail.domain is pointing to my plesk server's IP.

The problem is that I am not able to receive mail in roundcube mail client. Instead after 1 day I am getting mail from 'mailer-daemon@googlemail.com' screenshot2

Solution

All mail transfer protocol ports are closed, so it is not possible to receive mail:

# nmap -p 25,465,587 xx.xx.xxx.xx

Starting Nmap 6.47 ( http://nmap.org ) at 2018-08-20 21:39 +07
Nmap scan report for ec2-xx-xx-xxx-xx.compute-1.amazonaws.com (xx.xx.xxx.xx)
Host is up (0.17s latency).
PORT    STATE    SERVICE
25/tcp  filtered smtp
465/tcp filtered smtps
587/tcp filtered submission

Nmap done: 1 IP address (1 host up) scanned in 3.01 seconds

You need to allow incoming connections on the firewall. Take a look at this article too - Which Ports Need To Be Opened for all Plesk Services to Work with a Firewall?

And this - Amazon EC2 Security Groups for Linux Instances