Issue Mail sent and receive issue Gmail and Outlook

[Sventekz]

Server operating system version

Centos

Plesk version and microupdate number

18.0.71

Can anyone help me to solve this issue :

Server at PR3P193MB1104.EURP193.PROD.OUTLOOK.COM returned '550 5.4.312 Message expired, DNS query failed(ErrorRetry)'

 

[scsa20]

We need more information and the only thing provided is from outlook which gmail doesn't use. Were are you seeing that error? Is it a bounce back? What's the bounce back for gmail? What does the mail log show? You said it's sent and receive so what's the bounceback when sending from gmail/outlook to your domain?