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afair/get_mxers.rb

Created April 24, 2012 14:38
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Ruby: lookup email MX servers for a domain
Raw
get_mxers.rb
require 'resolv'
class Domain
def mxers(domain)
mxs = Resolv::DNS.open do |dns|
ress = dns.getresources(domain, Resolv::DNS::Resource::IN::MX)
ress.map { |r| [r.exchange.to_s, IPSocket::getaddress(r.exchange.to_s), r.preference] }
end
return mxs
end
end
p Domain.new.mxers('yahoo.com')
#=> [["mta7.am0.yahoodns.net", "66.94.237.139", 1], ["mta5.am0.yahoodns.net", "67.195.168.230", 1], ["mta6.am0.yahoodns.net", "98.139.54.60", 1]]
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