Issue Remote SFTP-Backups fails with 425 error

[fliegerhermi]

Server operating system version

Ubuntu 24.04.3 LTS

Plesk version and microupdate number

18.0.71 #2

Unable to create the remote backup: Transport error: unable to list directory: Curl error: (18) Transferred a partial file: The last FTP request: LIST: The last FTP response: 425 Unable to build data connection: Operation not permitted

Hi everyone,

I have a problem with my remote backup for a couple of days now. The automatic backups fails with the above error every night.
When I manually start a full server backup or an incremental one to the same remote space it is working.

What can I do?
Thank you!

 

[Sebahat.hadzhi]

Hello, @fliegerhermi . Kindly try the following:

1. Connect to the Plesk server via SSH.
2. Add option to /usr/local/psa/admin/conf/panel.ini:

[pmm]
ftpMaxTlsVersion = 12

Please let us know if that helped.