Cannot access third-party S3 provider Contabo

Hi, when we try to connect to Contabo’s S3 Object Storage service SQLbackupAndFTP refuses to accept the string we pass it in the GUI. I figure this has to do with the fact that they use a URL which does not terminate with a top-level domain.

i.e., They follow a pattern as in this example:
https://usc1.contabostorage.com/myBucketName

(as opposed to https://mybucketName.usc1.contabostorage.com or similar)

So any fixes for this so we can access that service?

Hello Jose,

Thank you for your message.

To resolve this issue, we recommend setting up a Custom S3-compatible connection.

Please follow this guide to set it up: S3 Compatible Custom - SQLBackupAndFTP Documentation.

Additionally, could you please try specifying the URL as https://usc1.contabostorage.com and set the bucket name as myBucketName?

Do you encounter any errors in this case?

Looking forward to your response.

Hi
I am also trying to connect SQLBackupAndFTP to my contabo storage, but it fails. Is the URL still usc1.contabostorage.com

Hi Soren,

Regarding the Contabo storage connection: the endpoint URL in your backup job settings should be:

https://usc1.contabostorage.com/

Could you please double-check your settings (as shown in your screenshot) and confirm they look the same — including the https:// and the trailing /?
Screenshot 2025-12-26 165654

We’ve tested this endpoint on our side and can confirm it works.

If the issue still persists, could you please contact our support team directly so we can investigate with the full details?

You can reach us via the support form: SQL Server Backup Support - SQLBackupAndFTP

Please include the exact error message you’re seeing (and ideally a screenshot) and confirm which endpoint you’re using.

Thank you!

I think that the main problem is that contabo and other providers expects connection to https://url, and not https://bucket.url
I have the same issue, and now I have use only ftp…

Hi Paulius,

Thank you for your message.

Could you please share a screenshot of your S3 storage settings in SQLBackupAndFTP (with the Secret Key hidden)?

This will help us better understand how Contabo’s S3 endpoint is being configured and reproduce the issue on our side.

Thank you!

Hi,

We have just updated the Contabo integration in the latest alpha version.

Could you please download and install the latest alpha build from:

https://sqlbackupandftp.com/download/alpha

When adding the destination, please select S3 Compatible → Contabo as shown below, rather than using the generic S3-compatible option.
Screenshot 2026-06-08 153744

After upgrading, please try connecting to your Contabo Object Storage again and let us know whether the issue is resolved.

If you still experience any problems, please send us the exact endpoint URL and any error message you receive, and we’ll be happy to investigate further.