class Mail::Address

def domain(output_type = :decode)

a.domain #=> 'test.lindsaar.net'
a = Address.new('Mikel Lindsaar (My email address) ')

the address
Returns the domain part (the right hand side of the @ sign in the email address) of 
def domain(output_type = :decode)
  parse unless @parsed
  Encodings.decode_encode(strip_all_comments(get_domain), output_type) if get_domain
end