> -----Original Message-----
> From: Kevin A. McGrail
Some additional tests you may want to consider
#Experimental block - Former Class E - 240.0.0.0/4
if ($ip =~ /^2[45]\d\./) {
return (1, "Invalid use of an experimental IP $ip as an MX record");
}
#Reserved for benchmark tests of interconnect devices 192.18.0.0/15
if ($ip =~ /^192\.1[89]\./) {
return (1, "Invalid use of a reserved IP $ip as an MX record");
}
#Reserved for documentation or published examples 192.0.2.0/24
if ($ip =~ /^192\.0\.2\./) {
return (1, "Invalid use of a reserved IP $ip as an MX record");
}
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