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

9th January 2024

No incidents reported

8th January 2024

No incidents reported

7th January 2024

Web: San Francisco Opal14 is not responding

opal14.opalstack.com is not responding. We suspect the cause is high load. We're rebooting the server at this time and will update this post when the server is back online.

  • Opal14 is back online following the reboot and is operating normally.

    • 6th January 2024

    Email: Germany German MX servers are on Hotmail block list

    mx1.de.opalstack.com and mx2.de.opalstack.com are listed on the Hotmail block list. As a result, mail forwarded to Hotmail domains like hotmail.com and outlook.com is being bounced back to the sender.

    We're working to have the servers removed from the block list and will update this post when that is done.

    In the meantime, customers who have forwarding addresses which forward to Hotmail domains are advised to forward to an alternate address or direct mail to an Opalstack mailbox to ensure that they receive their mail. Instructions for updating email addresses are available in our user guide at: Editing Email Addresses

  • The MX servers have been removed from the block list.

    • 5th January 2024

    No incidents reported

    4th January 2024

    No incidents reported

    3rd January 2024

    No incidents reported