All systems are operational
Maintenance
Scheduled downtime for opal9

On 20 May 2025 from 0700 - 1100 UTC opal9.opalstack.com (Frankfurt DE shared hosting) will be taken offline and relocated to a new rack within the data center.

Customer websites, files, and databases hosted on the server will be unavailable during the relocation.

Customer email accounts will remain online during the relocation. The server IP address will not change.

The maintenance window is 4 hours but the data center team will do everything possible to minimize the downtime within that period.

If you would like to move to a different server prior to the scheduled downtime, please email the Opalstack support team to request a migration.

We apologize for any inconvenience. If you have any questions or concerns regarding the maintenance then please email our support team and someone will get back to you as soon as possible.

Past Incidents

6th January 2022

No incidents reported

5th January 2022

No incidents reported

4th January 2022

No incidents reported

3rd January 2022

Email: Germany German SMTP blocked by Microsoft

On January 3 2022 at 20:47 UTC Microsoft began blocking mail sent from smtp.de.opalstack.com to domains that use the Microsoft 365 email system.

Microsoft's own IP reputation and junk mail reporting systems indicate that there are no problems with smtp.de.opalstack.com so we've reached out to them for answers.

We'll update this post as soon as more information is available.

In the interim as a possible workaround customers may create a new mailbox on our US mail server and use that temporarily for their outgoing email authentication.

  • It's been over a week and we've seen no blocks of the new server IP by MIcrosoft, so we consider this to be resolved.

  • We informed Microsoft of our findings and the corrective action we've taken but we've still received no further communication from them.

    To work around this we've moved smtp.de.opalstack.com to a new IP address. Customers do not need to change any settings - the DNS change should propagate automatically within the hour.

    After the DNS change has propagated, customers should be able to send mail to email addresses that are hosted by Microsoft.

    We'll leave this incident open and will continue to monitor.

  • We've still not heard from Microsoft but we believe we've identified the activity that triggered the block and are taking action to mitigate it at this time.

    We'll notify Microsoft of the actions we're taking and continue to hold on for a response.

  • We're still awaiting a response from Microsoft and have reached out to them as a reminder.

    • 2nd January 2022

    No incidents reported

    1st January 2022

    No incidents reported

    31st December 2021

    No incidents reported