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brianjlandau/gist:da0bab27dcf1d8691f6e

Last active November 16, 2019 01:23
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Email validator based on DNS
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gistfile1.rb
require 'resolv'
class EmailValidator < ActiveModel::EachValidator
def validate_each(record, attribute, value)
if Resolv::DNS.new.getresources(value.split("@").last, Resolv::DNS::Resource::IN::MX).empty?
record.errors[attribute] << (options[:message] || "does not have a valid domain")
end
rescue Resolv::ResolvError, Resolv::ResolvTimeout
record.errors[attribute] << (options[:message] || "does not have a valid domain")
end
end
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