Email connectivity for IMAP, POP3, and Webmail is currently down. We believe this to be caused by a power event effecting an isolated set of servers in our datacenter. We will post more information when the systems come back online.
— Joe and the SOC
Update: Our IMAP/POP3 cluster is having a thundering herd problem and we’re working hard to encourage it to come up smoothly. -Kelsey and William
Update: All services have been restored and stabilized. It appears that the root of the problem lies in our central radius authentication servers – while it may be as simple as needing to upgrade the existing cluster of 6 servers with faster CPUs, we suspect we may have hit an internal performance limitation in the radius server software that prevented them from being able answer requests fast enough. We strive for complete redundancy and should not have had any lasting stability problems after a few servers lost power. We’ll investigate this failure over the next few days and resolve as needed to ensure this problem doesn’t occur again. -Kelsey and William