We would like to inform you that we have already migrated to a new spam filtering system for your email service and we noticed that you have NOT updated your MX record for your domain.
In order for the new spam filtering service to work, we need you to update your MX record immediately from mail1.mailhostingservice.com to mx1.mailhostingservice.com
Please update the following record in your DNS settings.
example.com MX 20 mx1.mailhostingservice.com (20 is the priority and must be a higher number than the primary service MX
example.com MX mx1.mailhostingservice.com this should be your only MX record
For more details , please see https://support.duocircle.com/support/solutions/articles/5000701442-nettica-mx-record-change