# File lib/mail/network/delivery_methods/sendmail.rb, line 46 def deliver!(mail) envelope_from = mail.return_path || mail.sender || mail.from_addrs.first return_path = "-f \"#{envelope_from.to_s.shellescape}\"" if envelope_from arguments = [settings[:arguments], return_path].compact.join(" ") Sendmail.call(settings[:location], arguments, mail.destinations.collect(&:shellescape).join(" "), mail) end