After some feedback and questions we have decided to send this addenda:

Over the last few months we have been looking at mail sent by outside
vendors and for the following, we have determined that either they are not
affected by this change or we have already taken action to prevent this
change causing problems:

Constant Contact
Emma
TargetX
Mail Chimp
Salesforce
Marketplace
Evenue

If you know of other vendors sending mail using maine.edu addresses, please
let us know with as much detail as possible.   Ideally we would like to see
a sample email from them with full mail headers.

-- 
Irelann Kerry Anderson          phone:    (207)581-3508
Systems and Operations
Information Technology Services
University of Maine System
5752 Neville Hall
Orono, Maine 04469-5752