Powerful direct remailer software actr as SMTP relay. It puts email messages directly to mailbox of recipient. ISP's SMTP server is not involved. The program will query DNS for MX records, and deliver emails to so-called mail exhange servers. This is much more faster and more reliable. You can even use HTTP proxy server for sending emails. This is useful if you are behind corporate firewall, for example. Unique feaures:: Recipient will receive email right away. No internal queue is involved You do not need SMTP server of your internet server provider. The program cahes DNS requests for even faster email delivery User may specify up to 1000 different SMTP servers that will be used if email can not be delivered directly to it's mailbox. Protoport Sendmail Server uses very few system resources, and can be run on any computer with Windows system installed.