Opalstack System Status

On 24 September 2026 at between 07:00 am and 10:00 am UTC our network team will be relocating one of our mailbox storage servers to a new location within the data center.

The server will be offline during the relocation. As a result, some customer mailboxes will be unavailable for up to 3 hours during the relocation. Affected customers will be notified directly via email.

Affected customers will not be able to check their email for affected mailboxes during the relocation.

No incoming mail will be lost during the relocation. Mail that arrives during the relocation 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 relocation will not be stored as sent mail in IMAP folders on the server.

Customer websites will not be affected by the relocation.

We realize that the timing of this relocation may not be ideal. Customer who would like to have their mailboxes migrated to a different server in advance of the server relocation should contact the Opalstack support team to make the necessary arrangements.

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 email our support team and someone from our team will get back to you as soon as possible.

Past Incidents

2nd September 2022

No incidents reported

1st September 2022

No incidents reported

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.