Error Says MX not configured. we cross checked its correct

Error Says MX not configured. we cross checked its correct

Hi

We are not able to receive any mails.
I checked MX records.There is no issue.

But issue is with your SMTP.

Connecting to 74.208.101.38
4/25/2017 6:45:39 AM Connection attempt #1 - Unable to connect after 15 seconds. [15.02 sec]

PWS3v2 15189ms