require 'net/pop'
pop = Net::POP3.new('pop.mail.ru')
fsource = File.open("source.txt")
begin
  while (value = fsource.readline)
    begin
      pop.start(value.split(":")[0],value.split(":")[1])
      puts value
    rescue Net::POPAuthenticationError => e
      puts e.to_s
    end
  end
rescue EOFError
  fsource.close
end