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Create a custom MX record (for a Synology NAS, for example)

Update 08/06/2026

This guide explains how to create a custom MX record (mx.domain.xyz, assuming that domain.xyz belongs to you) to be used in the MX configuration of your NAS.

An MX record cannot be declared directly as an IP address, for example 178.123.456.789.

 

Custom MX record

To access your domain names:

  1. Click here to access your domain management in the Infomaniak Manager (need help?).
  2. Click directly on the name assigned to the domain in question.
  3. Click on DNS Zone in the left-hand menu.
  4. Click on the blue Add record button:
  5. Select MX as the type of record.
  6. Click on Next:
  7. Enter the desired MX record (e.g., "mx.domain.xyz").
  8. Point the record to the desired IP address (target).
  9. Click on the Save button:

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