All systems are operational
Maintenance
Scheduled network maintenance for opal3 and opal8

On 20 August 2026 between 11:00am and 4:00pm PDT (UTC-7) our data center team will be upgrading the racks that host the following servers:

  • opal3.opalstack.com
  • opal8.opalstack.com

During the 5-hour maintenance window, network connectivity to the affected servers will be interrupted for up to 1 hour during which websites and other services hosted on the servers will be unavailable.

Email and DNS services will not be affected.

The hosting control panel will remain online, but will be unable to apply changes to your services until connectivity to the server is restored.

Affected customers who would like have their services relocated to a different server prior to 20 August 2026 should contact the Opalstack support team to make the necessary arrangements.

Scheduled US IMAP email server downtime

On 26 August 2026 at between 11:00 am and 4:00 pm US/Pacific time our network team will be performing infrastructure maintenance. During this 5-hour window, network connectivity to one of our US IMAP/POP3 email servers will be interrupted for up to 1 hour.

As a result, some customer mailboxes will be unavailable for up to 1 hour during the network interruption. Customers who will be impacted by the interruption have been emailed directly.

No incoming mail will be lost during the interruption. Mail that arrives during the interruption will be deferred and delivered once connectivity to the mail server is restored.

Email forwarding and SMTP services will not be affected, however messages sent via SMTP during the interruption will not be stored as sent mail in IMAP folders on the server.

We'll update our status page at http://status.opalstack.com/ at the beginning of the maintenance window. To be informed of system status updates automatically please subscribe at https://status.opalstack.com/subscribe.

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

Past Incidents

25th January 2021

Web: Frankfurt EU VPS and NS connectivity problems

There seems to be a loss of connectivity in our EU VPS datacenter. We're investigating at this time.

  • The upstream issue has been resolved.

  • All EU services are back online. We'll continue to monitor until resolution of the upstream issue is confirmed.

  • At this time connectivity to most of our EU services has been restored. ns3.de.opalstack.com and one customer VPS remain affected.

  • This issue is also affecting all of our DE name servers. We're working to restore service ASAP but if you are using our DE NS and need an immediate workaround please change your NS over to our US name servers.

  • We've confirmed that there is an outage in the Linode data center that hosts our EU VPS: https://status.linode.com/incidents/dm9mc14kv2t4

    We'll update this post when more info is available.

    • 24th January 2021

    No incidents reported

    23rd January 2021

    Email: USA US SMTP on Cloudmark blacklist

    At this time Opalstack's US SMTP is on the Cloudmark blacklist. We're working to have the server delisted and expect that to be done within the next 24-48 hours.

  • Our US SMTP is no longer on the Cloudmark blacklist.

    • 22nd January 2021

    No incidents reported

    21st January 2021

    Web: Frankfurt EU VPS network connectivity problems

    Connectivity to some EU VPS may be degraded due to active ongoing maintenance by our upstream provider. We'll update this post as soon as the maintenance is complete.

  • The network has been stable since our last update so we're considering this to be resolved.

  • EU VPS network connectivity is now stable. We'll continue to monitor.

  • EU VPS customers may see further connectivity issues while our upstream provider is performing emergency maintenance.

  • The maintenance is complete and connectivity to EU VPS remains stable.

  • Connectivity to EU VPS is stable at this time. The maintenance is still in progress so we'll continue to monitor.

    • 20th January 2021

    No incidents reported

    19th January 2021

    Email: USA US IMAP service performance degraded

    The IMAP service on our US mail system is currently running very slowly. We're working to correct that at this time.

    This is also causing timeouts and errors for users accessing Opalstack webmail, including users of our German mail system.

  • The US IMAP server is back online and is operating normally. We'll be upgrading the server in February to avoid future problems.

  • We've rebooted the US IMAP server and are monitoring.