An informal list of Mail Service Provider Outages and Bugs

Nothing big; just used to informally keep a history so we can learn from history!

1. Thunderbird / GMail: Failed to Connect to Server error - ANSWERED: NOT a TB problem; temporary Google problem (DNS entry removed for googlemail?), fixed by Google Saturday August 7th, 2010 8:30a.m.
2. Thunderbird has stopped getting yahoo mail due to a Yahoo server issue on June 22, 2011. ANSWERED: Not a Thunderbird problem but a Yahoo server problem because it happens with Outlook and other email clients not just Thunderbird - fixed by Yahoo June 24, 2011
3. Yahoo bug blocked sent email (flagged it as abuse) with #FFFFFF WORKAROUND: use lowercase #ffffff - March 10, 2012 - fixed by Yahoo March 12, 2012
4. AT&T changed their settings for u-verse and "normal" AT&T recently to inbound.att.net,port 995, SSL and outbound.att.net, port 465, SSL bug doesn't look like they communicated this to their customers well - Hmmm perhaps AT&T changed the settings in October 2010 but didn't break the old settings until March 2012?
5. Brief Gmail IMAP outage around August 9, 2012. Appears to have been resolved by Google on August 10, or 11 2012 - [bug 781543], [GS1]
6. YouSendIt problem with existing files (new files unaffected) - September 14, 2012 10am.ish