For all users of MS Exchange with a SmartHost configuration experiencing difficulties sending/receiving email via Comodo Antispam Gateway.
Open Exchange Management Console.
Click on the ‘+’ next to Organization Configuration.
Select Hub Transport and select the ‘Send Connectors’ tab.
Right-click on the existing Send Connector, select ‘Properties’ and go to the Network tab.
Select “Route mail through the following smart hosts:” and click ‘Add’.
Enter 50.23.158.210 94.23.100.17 mxpool1.spamgateway.comodo.com
Repeat process to add 50.23.158.211 94.23.100.18 mxpool2.spamgateway.comodo.com
Click OK (no authentication is required)
Launch your Exchange Powershell Console and at the prompt enter: Set-SendConnector -identity ‘NAME OF YOUR SMTP CONNECTOR’ -Port:587
Restart the transport service from your services.msc MMC
Log in to your CASG console and go to the Outbound Users panel
Add the External IP address of your Exchange server as a user (e.g. ‘SERVER IP ADDRESS’[at]‘DOMAIN’)
If you are still struggling please contact us asgsupport[at]comodo.com