App Whitelisting Documentation

This documentation is written for institutional IT departments.

Because emails are means of authorization and authentication for the CPSolvers mobile app, it is crucial that the sending of emails is free of potential interruptions. This documentation outlines the information needed for IT departments to set up the whitelist.

The emails will always come from an email address that ends with:

MAIL FROM domain is:

The emails are signed with DKIM, and an example of the signature is as follows, with the most significant portion highlighted:

DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/simple; 
t=1606456938; h=Content-Type:MIME-Version:Subject:From:To:Date:Message-ID; 
b=UBp0qPG3EEV04nbkApYsxk/O2WIImGJmY/D+Ae9tR4rMdOe+R9NuNK399CLuFcBH hTmqQko3ximDPw2XP9zufW46oiOjEjgQI7gqwVTcYTllWnnmoygEsKhfY+OI96QW0Sx EmJcVYZu5mJ3LYOKOz6C/RKHPMSFDZUmwwz8Kh0c=

We use AWS’s email service to send emails. The mail server’s IP address is dynamic, though as of the time of this documentation the following subnets are possible: