All systems are operational
Maintenance
US IMAP email server downtime

On 22 July 2026 at 10:00 am US/Central time (UTC -5) one of our US IMAP email servers will be shut down for infrastructure maintenance. The server will be offline during the maintenance and the expected downtime is 6 hours.

Affected customers will be notified individually via email.

No incoming mail will be lost while the server is offline. Mail that arrives during the maintenance will be deferred and delivered once the mail server is back online.

We realize that the timing of this relocation is not ideal. If you have business-critical mailboxes and would like them to be available during the maintenance then please email support@opalstack.com or reply to this message to make arrangements to have your mailboxes migrated to a different IMAP server prior to the scheduled maintenance date.

If you have any questions or concerns regarding this maintenance then please email the Opalstack support team for assistance.

Past Incidents

6th May 2020

No incidents reported

5th May 2020

No incidents reported

4th May 2020

No incidents reported

3rd May 2020

No incidents reported

2nd May 2020

No incidents reported

1st May 2020

No incidents reported

30th April 2020

Web: Dallas Opal4 not responding

Opal4 is not responding. We're looking into the cause.

  • We believe this latest issue was caused by a DNS reflection attack.

    We're consulting with our upstream provider to see what they can do to protect the server and network from future attacks.

  • Opal4 is back online, investigation is ongoing.

    • Web: Dallas Apache was not responding on Opal4

    Apache was once again not responding on Opal4 after hitting its configured ServerLimit. The underlying cause appears to have been a high number of PHP-FPM processes being re-spawned for one customer site. We've adjusted the PHP-FPM configuration for that site to avoid the problem in the future.