incrediBILL - 11:40 pm on Nov 28, 2012 (gmt 0)
From what I read the Google SPF lists are pretty all encompassing because the change IPs for stuff all the time and that's pretty much the list I had too. Says right on their website that it's where to get the definitive list of IPs and that comment was in the Google Developer section I think and wasn't an email discussion.
MS IP usage is all over the map so who knows. I think any IP is fair game at MS to be used for anything.
I just want sources that I can download and process automatically and keep updated without going stale and these look good so far but you're right, the MS list needs some concatenation.