Whitelist our Email Address
Updated on June 12, 2019
Campaign delivery addresses
Below are the addresses you can whitelist if you’re having trouble delivering email from our software to your own network. Depending on your situation, you can whitelist sending domains or IP addresses.
Return-path sending domains
Instead of whitelisting all of our sending IP addresses, you can whitelist our domains. They currently include cmail1.com through to cmail20.com.
If you have set up authentication, you will also want to whitelist the domain you have authenticated. Subdomains can be authenticated, if your mail administrator would like to limit access further.
Sending IP addresses
Below are the IP ranges we use for sending email:
In cases where you need to whitelist IPs to receive email from our servers, we recommend mail administrators set up custom rules within their email filtering software. To work, the rule must match both of these conditions:
Any email that doesn’t match one of these conditions can be rejected. A custom rule like this is generally an acceptable solution for security teams and mail administrators.
For more information on our Email campaigns via Campaign Monitor please click here