Mailprotector uses twenty servers to send outbound email, also called otransports. Occasionally, an IP address can be blacklisted as a spam source or a user complaint will damage the IP addresses' reputation. The list below is the IP address for each of the twenty servers.
An IP address can be taken out of service by DevOps if a reputation problem is identified. Once the reputation problem has been resolved, DevOps will place the IP address back into service.
Transport Server IP Addresses:
Transport Server Host Names:
Outbound transport servers have a hostname syntax as expressed below:
NOTE: will be replaced by otransport-X.us-east-1.emailservice.io - release date TBD
Transport Server IP List (for easy copy & paste)
22.214.171.124, 126.96.36.199, 188.8.131.52, 184.108.40.206, 220.127.116.11, 18.104.22.168, 22.214.171.124, 126.96.36.199, 188.8.131.52, 184.108.40.206, 220.127.116.11, 18.104.22.168, 22.214.171.124, 54.172220.45, 18.204.234187, 126.96.36.199, 188.8.131.52, 184.108.40.206, 220.127.116.11, 18.104.22.168