Error:amandad: time 0.002: accept error: access as amandabackup not allowed from amanda@host: cannot open /var/lib/amanda/.amandahosts: Permission denied

This error occurs when /tmp/amanda directory is owned by the wrong user. Make sure to

 $chown -R amandabackup:disk /tmp/amanda 

Also make sure that /var/lib/amanda/.amandahosts is owned by amandabackup

 $chown amandabackup:disk /var/lib/amanda/.amandahosts