This one was rather annoying, so I thought I’d share lessons learned. Yesterday morning, our web host provider had a number of servers accidentally added to BlackList 1. Not good, because it caused our outgoing email under the .com TLD to be blocked. This meant that all outgoing emails bounced. Fortunately, our backup .ca TLD domain is hosted elsewhere. We’ve switched over temporarily, and while annoying, it does show that unless a company has a backup for email, they can be shut down rapidly and with no notice. We are still waiting for resolution.