Unfortunately, the message is not perfectly clear:

>> All other save sets fail with "error, permission denied. 'SYSTEM on 
>> '10.x.x.1' must have remote access privilege to client 'client1.domain.tld'. 
>> <<

One solution could be that you add the appropriate User in the User Group and 
assign the privilege 'Remote Access All Clients'.

The other potential  solution is to add the appropriate entry (obviously 
[email protected]) in the client's 'Remote Access' list (Globals 2/2 tab). 

And of course, the name resolution must be uniquely possible at all times, 
either via DNS or hosts file.

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