Problem:

R1soft server is unable to connect to Agent server, and giving following error message.

Cause:

The R1soft backup server IP has been blocked at Agent server firewall. If you have CSF firewall installed, then its blocked by CSF firewall.

Solution:

Remove R1soft server IP from blocked / deny IP list. It may be temporary blocked or listed in csf.deny
Also add R1soft server IP in csf.allow as trusted IP.

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