Mailsecure

Make domain list(put the domains the want in here)

vim /root/mailsecurelist

Run this for loop to use the domain list to backup each domains zone file, then remove the old mx entries, and add the new ones as well as update the ttls and serials all at once.

for i in `cat mailsecurelist`; do sed -i.lwbak -e '/IN[[:space:]]*MX/d' /var/named/$i.db; echo "$i.    300     IN      MX      0       bmx01.sourcedns.com." >> /var/named/$i.db; echo "$i.    300     IN      MX      0       bmx02.sourcedns.com." >> /var/named/$i.db; sed -i -e 's/^\$TTL.*/$TTL 300/g' -e 's/[0-9]\{10\}/'`date +%Y%m%d%H`'/g' /var/named/$i.db; done

test work

for i in `cat /root/mailsecurelist`; do grep --color "\$TTL" /var/named/$i.db; grep --color -e '[0-9]\{10\}' /var/named/$i.db; egrep --color 'IN[[:space:]]*MX' /var/named/$i.db; done

Reload name server.

rndc reload