Inbound email delivery has been stable since Monday afternoon, August 8.

Last week's delivery delay appeared to be a disk constraint. The team scaled the system and moved processes to faster disk resources. Unfortunately, increasing the disk performance moved the resource constraint to another layer of the system, and the problem was repeated on Monday morning.

Mailprotector understands the importance of consistent email flow, and delays can create more business disruption than many other technical issues.

The team has over-provisioned the systems to ensure the delivery delays do not repeat. At the same time, new monitoring and warning alerts are being developed to scale resources better ahead of noticeable performance changes. Historically, the transport systems have run smoothly since they do nothing more than complete the delivery of a message to a destination email server. The monitors and alerting added to the transport servers will provide the team more visibility to react in a timelier manner and prevent delays as we continue to grow with our partners.

The inbound email delays are resolved, and we do not anticipate further performance problems.