We are happy to report that we haven't seen any further issues and consider this incident solved.
Posted 21 days ago. Aug 02, 2017 - 11:59 UTC
The operations team has implemented a fix to address the issue affecting intermittent connection to mailboxes on cluster A. We will continue to monitor the issue for now updates if the status changes.
Posted 21 days ago. Aug 02, 2017 - 10:34 UTC
We are currently investigating intermittent errors when connecting to mailboxes on cluster A over IMAP, POP3, and Webmail. Users may intermittently experience errors when trying to send or receive mail. Our operations team is investigating the issue.