Using Perl to make changes to your DNS files
Example : You would like to change “v=spf1 a mx ip4:1.2.3.4 ?all” to “v=spf1 a mx ip4:1.2.3.4 -all”
of course, where 1.2.3.4 should be replaced by your server IP.
If you’d rather do this to all of your domain, you can use perl
cd /var/named
perl -pi -e ’s/\?all/\-all/’ *.db
change /var/named to the appropriate directory for your db files for your OS (/etc/bind, /etc/namdb)
Restart named after making the changes.
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