SMU does not employ email safelisting per policy. Exempting inbound emails from spam and virus scanning is very seldom required to ensure delivery from vendors with good hygiene, and it exposes the campus to unnecessary risk.
As an alternative, SMU OIT will gladly work with off-campus vendors on other methods to ensure bulk message delivery, including relaxed inbound message throttling rules, DKIM and SPF. We can also work directly with vendors to monitor inbound messages (test or production) to determine whether there is a legitimate concern about delivery and to ensure CAN-SPAM conformance.
The following resources are available for external vendors who desire to ensure delivery of mass email to SMU: