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

31st August 2022

No incidents reported

30th August 2022

No incidents reported

29th August 2022

No incidents reported

28th August 2022

No incidents reported

27th August 2022

Web: Washington D.C. Opal10 not responding

Opal10 (shared hosting in Washington DC) is currently not responding. We're investigating.

  • Opal10 is back online.

  • Opal10 became non-responsive again so we're rebooting it once more.

  • Opal10 is back online. The outage was caused by a runaway user process consuming too much memory. We'll work with the related customer to resolve the issue.

  • We're rebooting opal10 at this time.

    • Email: USA US SMTP blocked by Cloudmark

    At this time our US SMTP is being blocked by the Cloudmark Sender Intelligence block list. We've dealt with the cause and have started the de-listing process.

    If you receive a bounce message, please do not attempt to delist the server yourself via the URL in the error message. We're taking care of it.

    We'll update this post when the server has been removed from the list.

  • We've confirmed that there are no further blocks by Cloudmark.

  • Cloudmark have stated that they have de-listed the server IPs. We'll continue to monitor until we see no further blocks in the mail logs.

  • We're still working with Cloudmark to have the US SMTP and MX servers delisted.

  • We've discovered that the US MX servers are also blocked. This could cause mail forwarding to fail if the final recipient domain is using the Cloudmark block list, so we've requested delisting of those as well.

    • 26th August 2022

    No incidents reported

    25th August 2022

    Web: London Several London VPS are offline

    At this time several London VPS are offline due to a connectivity issue in the London data center.

    The DC team are looking into the issue. We'll update this item when more info is available.

  • The issue is confirmed to be resolved.

  • The data center team identified a switching issue and a fix has been implemented. All London VPS are back online at this time.

    We'll continue to monitor awaiting final confirmation from the data center that the issue is fully resolved.