Mikrotik resolve-block-hosts

# define variables
:local list
:local comment
:local newip

# Loop through each entry in the address list.
:foreach i in=[/ip firewall address-list find list="blocked-site" disabled=no] do={

# Get the comment for this address list item (this is the host name to use)
 :set comment [/ip firewall address-list get $i comment]

# Resolve it and set the address list entry accordingly.
 :log info "dns resolve $comment"
 :do {
## :set newip [:resolve $comment]
  :if ( [:len [/ip firewall address-list  find list="blocked-host" address=$newip]] = 0 ) do={
##  :log info " $comment = $newip"
   /ip firewall address-list add address=$newip list=blocked-host comment=$comment
  }
 } on-error={
  :log error "dns normal resolve failure $comment"
 }

#Resolve by google DNS
 :do {
  :set newip [:resolve $comment server=8.8.8.8]
  :if ( [:len [/ip firewall address-list  find list="blocked-host" address=$newip]] = 0 ) do={
#  :log info " $comment = $newip"
   /ip firewall address-list add address=$newip list=blocked-host comment=$comment
  }
 } on-error={
  :log error "dns google resolve failure $comment"
 }
}

#####
/ip fi ad
add address=0.0.10.15 comment=example.com list=blocked-site
add address=0.0.10.16 comment=example.net list=blocked-site