Our engineers are continuing to investigate this issue. They have made a configuration change to restore client functionality via POP/IMAP/SMTP. Users may need to restart their clients in order to restore connectivity.
At this time, users may still be unable to connect to Webmail or the Control Panel. We will continue to update you with more information once it is available.
UPDATE - Our engineers are actively working on the resolution to this issue. The previously mentioned configuration changes have resulted in positive reports. Some users may still be experiencing residual connectivity issues at this time. Affected users may need to restart their clients in order to restore connectivity.
We will continue to monitor the situation and provide updates as they become available.