Question Change DNS for only one domain

[Gaylord]

Hello,

I want to change DNS for only one domain. Because I want to manage only website www.mydomain.com, no e-mails for this domain @mydomain.com (this is for registrar).

In plesk, this is my DNS configuration for this domain :

I have deleted MX zone and "smtp / pop / mail.mydomain.com".

Now,

• www.mydomain.com it's working well
• I can send @mydomain.com with GMail, Live, others servers, etc ...
• But I can't send @mydomain.com for my server (with other domain of course), I have this error :

Reporting-MTA: dns; ns321003.ip-37-187-154.eu
X-Postfix-Queue-ID: 2CFC568C00C0
X-Postfix-Sender: rfc822; g.poillon@dometech.fr
Arrival-Date: Mon, 2 Jan 2017 08:51:00 +0100 (CET)

Final-Recipient: rfc822; syndic@mondomaine.com
Original-Recipient: rfc822;syndic@mondomaine.com
Action: failed
Status: 5.4.6
Diagnostic-Code: X-Postfix; mail for mondomaine.com loops back to myself

​

Can you help me ? Thanks