MX

What Is an MX Record?

MX (Mail eXchange) records are DNS entries that define where your emails should be delivered. They work with a priority system: the lower the number, the higher the priority.

Simple Example

If you have:

• server-A.com with MX 10

• server-B.com with MX 20

Emails are delivered first to server-A.com. If that server does not respond, they are redirected to server-B.com.

Your Situation Before the MX Modification

Current Configuration (Typical Example)

Your MX records probably look like this:

The Problem

All your emails (including spam) arrive directly on your server, meaning there is no filtering before delivery and your server must handle all spam itself.

Configuration Without e-securemail MX Records

How Does It Work?

The principle is simple: we use MX priority levels to force all your emails to pass through an anti-spam filtering service before reaching your server.

Configuration to Implement

NEW MX Record Configuration

Your DNS must contain ONLY these two MX records:

france.security-mail.net     MX 10
europe.security-mail.net     MX 20

Why Two Servers?

• france.security-mail.net (MX 10): Primary filtering server

• europe.security-mail.net (MX 20): Backup server (redundancy)

If the French server does not respond, europe.security-mail.net automatically takes over.

⚠️ Important: Remove Old Records

You must REMOVE all previous MX records:

• mailgate.your-domain.com

• smtp.isp.net

• backup.isp.net

• Any other existing MX records

Correct Configuration with e-securemail MX Records

Key Points to Remember

• MX Priority: The LOWER the number, the HIGHER the priority

• New MX Records Only: france.security-mail.net (MX 10) and europe.security-mail.net (MX 20)

• Remove Old MX Records: mailgate.your-domain.com and smtp.isp.net must NO LONGER appear in the MX records

• Action Required: Ask your DNS provider/ISP to completely replace the MX records

• Propagation Time: A few hours may be required for full Internet propagation