First, we do this for all of our customers, making it easier for you. Also, this work is part of our service, so don’t worry about being charged for extras.

Setting up reverse DNS on an IP address allows mailbox providers (those you send campaigns to) to verify the sender when they do a reverse DNS lookup upon receipt of the emails you send. When your DNS is updated with this DNS record, and then send mail over your CRE Cloud Solutions IP, the recipient’s email service provider performs a reverse DNS lookup (rDNS) using an A Record (address record). An A Record maps your domain to your IP address. When a mailbox provider looks up your A Record, they see the CRE Cloud Solutions IP address. When they look at your IP address, they see the rDNS that matches your A Record. This circular checking proves your CRE Cloud Solutions IP association with your domain and your domain association with your CRE Cloud Solutions IP.

This circular checking allows the receiving email provider to trust that the sender is not spoofing or sending emails that from an email that does not match that email’s domain.