QK SMTP Server is a powerful but easy-to-use smtp server software, which can send mails from local host to the recipients' mailboxes directly at an amazingly high speed. Arrived or not, you will get feedback instantly.
QK SMTP Server can send your emails via direct
mode firstly. When it fails, QK SMTP Server
will automatically relay these emails to a regular SMTP Server.
QK SMTP Server supports simple authorization
before sending emails. You can set up a group of username/password
to keep your SMTP Server from anonymous users.
or go to our online support center, We will reply to you as soon as possible. 
QK SMTP Server -- Flash Tutorial
