FTP connect repeat .. upload failed! Failed to read reply to initial connection

it it possible to make repeat of ftp connect ?
because when backup uload to ftp
failed I am gt error
.. upload failed! Failed to read reply to initial connection

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Howdy -- it does indeed attempt to re-try the FTP upload itself, but it doesn't re-try the connection/login attempt.

Normally, the issue there is that the password was incorrect, so it doesn't re-try sending the same password.

Are you seeing that issue frequently though?

yes this problem become when backup server changed to new (proftpd server)

but 1-2 websites of 7 got that same error on each backup

ftp password 100% correct

.. upload failed! Failed to connect to 150.17.188.26:21 : Connection refused

Uploading archive to FTP server 150.17.188.26 ..
.. done

.. upload failed! Failed to read reply to initial connection
Uploading archive to FTP server 150.17.188.26 ..
.. done
Uploading archive to FTP server 150.17.188.26 ..
.. done
.. upload failed! Failed to read reply to initial connection

Uploading archive to FTP server 150.17.188.26 ..
.. done

What shows up in the logs of your ProFTPd server when the backups are unable to connect to it?