A vulnerability has been reported in spamdyke, which can be exploited by malicious people to bypass certain security restrictions.
The vulnerability is caused due to "smtp_filter()" not properly restricting the DATA command if no valid recipient was specified. This can be exploited to e.g. abuse a spamdyke installation as open mail relay by sending a certain sequence of recipient data and DATA commands.
The vulnerability is reported in versions prior to 3.1.8.
Solution: Update to version 3.1.8.
Provided and/or discovered by: The vendor credits Mirko Buffoni.
Original Advisory: http://www.spamdyke.org/documentation/Changelog.txt
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Subject: spamdyke "smtp_filter()" DATA Command Relay Vulnerability
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