Tonight, at 12:00AM, we will migrate “mail.sonic.net” to a new cluster. Users may be unable to send mail through mail.sonic.net during the migration which is expected to take 10-15 minutes to complete. There’s no new exciting features to tout, just a fresh OS and faster modern hardware.
In other news, our MX server cluster now supports SSL encryption for inbound connections. This allows the session between the connecting server and our’s to be fully encrypted preventing messages from being available “on the wire” in clear text. Our outbound servers have supported this kind of encryption when sending mail to destinations that support it for more than a decade. At this time it looks like approximately 15-20% of inbound email is encrypted in transit.
Update: Wed Nov 13 00:48:37 PST 2013, the upgrades are finished and went over as planned.