Mass Dmarc update

I am currently adding dmarc records to all domains on our servers and have been following the suggestion in Now this seems to write the correct record to the dns Now I know this is an old post but as im running thru adding dmarc records to my servers i noticed that the serialize bump # find /var/named/*.db -mtime -1 -exec perl -pi -e 'if (/^\s+(\d{10})\s+;\s+serial/i) { my $i = $1+1; s/$1/$i/;}' '{}' \;
doesn't appear to work when running in a cluster because the moment i restart named and run a synchronize all records to all servers run the old dns from the other servers in the cluster overwrites the changes has the serialize function changed or am i missing a step or something?