On Tue, 4 May 2010, Greg Troxel wrote:
Thanks - I did pretty much understand the tests. What I'm boggled about is that they suddenly started firing, and then now suddenly do not.
This is perfectly consistent with the explanation I offered at the beginning of this thread. A legitimate Google MX was temporarily blacklisted. Given that it was hitting dialup Lists, I would guess that maybe Google was (re)assigned an IP block that was previously dynamic.
- Charles
