There are couple of scenarios involving MX records.
1. You want all emails for your domain to go to some outside MX, and no email to be received by your hosting server. If this is the case, you can change the MX from your control panel.
2. You want to continue to receive email at your hosting server but all incoming email to go to those MX for filtering purpose, and that filtering service will forward the mail to your hosting server. For this purpose, you will need to open a support ticket.
3. You have multiple MX records that you want to add to your dns zone. In this case, you will need to open a support ticket.
Please advise accordingly in the support ticket that whether (a) you are using those MX for filtering purpose or (b) want to forward all emails there and will get it from there, so techs can make the changes on the server accordingly.
Note: After MX changes, please allow a couple of hours for the dns propagation.
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