SMTP Preprocessor is advanced tool for mail administrators... The programreceives SMTP messages before corporate SMTP server, on-the-fly changes or rejects them, and retransmits result to the server... SMTP Preprocessor can reject connection based onremote host IP address or DNS name (Black List), presence of reverse DNS PTR record, validity of HELO or EHLO command andconnections limit; reject MAIL command based on sender address (Black List), transactions limit and message size; reject RCPT commandbased on recipient address (Private Recipients List), recipient domain name (Anti-Relaying), sender address (Restricted Senders List) andrecipients limit; reject out-of-order SMTP command; flexibly replace corporate SMTP server response or any SMTP Preprocessor generatedresponse; replace sender in SMTP envelope (MAIL command); replace recipient in SMTP envelope (RCPT command)...
Tags: smtp, email, helo, ehlo, rcpt,