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| 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 |