Module: MailAddressVerifier

Defined in:
lib/mail_address_verifier.rb,
lib/mail_address_verifier/version.rb

Constant Summary collapse

VERSION = 
"0.1.0"

Class Method Summary collapse

Class Method Details

.get_domain(mail_address) ⇒ Object

Your code goes here…



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# File 'lib/mail_address_verifier.rb', line 8

def MailAddressVerifier.get_domain(mail_address)
  if mail_address =~ /^[^@]+@(.+)$/
    domain = $1
  else
    raise "Invalid mail address format."
  end
end

.get_mx(domain) ⇒ Object 



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# File 'lib/mail_address_verifier.rb', line 16

def MailAddressVerifier.get_mx(domain)
  Resolv::DNS.new.getresources(domain, Resolv::DNS::Resource::IN::MX)\
    .sort_by {|r| r.preference}\
    .map {|r| r.exchange.to_s}
end

.verify_by_domain(mail_address) ⇒ Object 



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# File 'lib/mail_address_verifier.rb', line 37

def MailAddressVerifier.verify_by_domain(mail_address)
  result = false
  begin
    mx = get_mx(get_domain(mail_address))
    unless mx.empty?
      result = true
    end
  rescue
    result = false
  end
  result
end

.verify_by_smtp(mail_address, myhost, myaddress) ⇒ Object 



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# File 'lib/mail_address_verifier.rb', line 22

def MailAddressVerifier.verify_by_smtp(mail_address, myhost, myaddress)
  mx = get_mx(get_domain(mail_address)).first
  result = false
  Net::SMTP.start(mx) do |smtp|
    smtp.helo myhost
    smtp.mailfrom myaddress
    begin
      smtp.rcptto mail_address
      result = true
    rescue
    end
  end
  result
end