Update MX Records for DreamHost
1. Log in to DreamHost administrative control panel at https://panel.dreamhost.com/ by entering your email address/Web ID and Web panel password.
2. Click 'Mail' from the left hand side navigation and select 'MX' from the options.
3. Click 'Edit' beside the domain name for which the MX records are to be updated.
4. Delete all existing MX records under 'Custom MX Records'.
5. In the first two text boxes, the FQDN of your preferred CSEG service domain.
CSEG primary service domains are:
EU: mxpool1.spamgateway.comodo.com
US: mxpool1.us.spamgateway.comodo.com
6. In the second text box, enter the FQDN of your preferred CSEG service domain
CSEG secondary service domains are:
EU: mxpool2.spamgateway.comodo.com
Please note there is no secondary service domain for the US based service. Leave it blank.
7. Click 'Update your custom MX records now!'
The MX records for your domain are updated now. But it may take up to 48 hours for the changes to take effect.