Our apologies for the SSL problems you guys have been experiencing in the last 12 hours. This was actually a DNS issue. We tested the new server from multiple locations around the world and it seemed that our DNS changes had completely propagated, but it now seems a few customers ISP’s were still seeing the old SSL connection.
We’ve manually switched to the new SSL certificate now (secure2.campai…), so until propagation is completed in the next 12 hours or so, you will see a small security alert when you send a campaign. Ignore this, your campaign will be delivered and the alert will soon disappear.