To use SpamZone for Spam and Virus protection you will need to firstly contact sales to setup an account, Once this is completed you then need to update your domains DNS settings to reflect the following info.
Delete ANY MX records currently in place.
Add NEW MX records with the following info.
MX 10 cluster3.absmailgateway.net
MX 10 cluster1.absmailgateway.net
(Make sure both MX records are set to the same weight and or preference level of 10 as to allow for load balancing via DNS round robin)
Allow SMTP delivery from ONLY the following two locations
Supply Sales with your email server IP address as to allow for SpamZone to deliver email