Current Status: Engineers have added additional capacity to assist with processing Yammer messages. The message queue is currently draining, though not as quickly as expected. Engineers continue to investigate a means to expedite the delivery of the messages.
User Experience: Affected users may experience delays when sending and receiving Yammer messages.
Customer Impact: Impact appears to be limited at this time. The most prominent forms of impacted messages include: message posting and replies, digests, activation and sign-up, group joins and mentions.
Incident Start Time: Wednesday, May 27, 2015, at 2:30 PM UTC
Preliminary Root Cause: The message delivery process that the Yammer infrastructure utilizes is not functioning as expected. The underlying cause of the issue remains under investigation.
Next Update by: Wednesday, May 27, 2015, at 10:00 PM UTC