spamdyke is a drop-in filter for qmail to provide connection-time blacklisting, graylisting, DNS RBL/RHSBL checking, sender MX checking, improved logging, and more. spamdyke will provide SMTP AUTH and TLS to unpatched qmail servers. Installing spamdyke does not require patching or recompiling qmail. License: GNU General Public License (GPL) Changes: This version fixes a bug in TLS passthrough. spamdyke was adding garbage output to the beginning of the SSL handshake (which corrupted the SSL traffic). The testing script had been conveniently discarding the extra output before beginning SSL negotiation, which concealed the bug.

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