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

27th January 2021

No incidents reported

26th January 2021

No incidents reported

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.