We’ve discovered that selected email addresses at Yahoo have been blocked (by Yahoo) due to the spam that leaked through our lists lately. Now that we have the leakage under control, we are working with Yahoo to clear up the blockage.
Watch here (or follow tigrisdotorg on Twitter) for further details.
At this time, these Yahoo addresses are the last ones we know of with such blocking. If you have any evidence of other addresses being blocked, please let us know, by email to “feedback” at Tigris dot Org.