SMTP Preprocessor is advanced tool for mail administrators. It enhances functionality of corporate mail server. The program receives SMTP messages before corporate SMTP server, on-the-fly changes or rejects them, and retransmits result to the server. Wide range of settings allows to improve security and add new features to corporate SMTP server. SMTP Preprocessor can reject connection based on remote host IP address or DNS name (Black List), presence of reverse DNS PTR record, validity of HELO or EHLO command and connections limit; reject MAIL command based on sender address (Black List), transactions limit and message size; reject RCPT command based on recipient address (Private Recipients List), recipient domain name (Anti-Relaying), sender address (Restricted Senders List), recipients limit or based on Greylisting technology; reject out-of-order SMTP command; delay its response (Tarpitting technology); flexibly replace corporate SMTP server response or any SMTP Preprocessor generated response; replace sender in SMTP envelope (MAIL command); replace recipient in SMTP envelope (RCPT command). The program keeps adjustable detailed log of all SMTP events.
» version 1.11 - posted on 2013-11-10
Fixed some bugs, added new feature
» version 1.07 - posted on 2007-03-01
Fixed some bugs
EULA - End User License Agreement
10-November-13. Version 1.11
1. SMTP Preprocessor is a freeware program product.
2. The author - Sergey Merzlikin, exclusively owns all copyrights to
3. SMTP Preprocessor may be freely distributed provided the
distribution package is not modified. No person or company may charge a fee
for the distribution of this software without written permission from the
4. SMTP Preprocessor IS DISTRIBUTED "AS IS".
NO WARRANTY OF ANY KIND IS EXPRESSED OR IMPLIED.
YOU USE AT YOUR OWN RISK. THE AUTHOR WILL NOT BE LIABLE
FOR DATA LOSS, DAMAGES, LOSS OF PROFITS OR ANY OTHER
KIND OF LOSS WHILE USING OR MISUSING THIS SOFTWARE.
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