With the introduction of IPv6 in SmarterMail 11.x, there are a few security and spam checks included within SmarterMail that are exclusively IPv4 based. Below is a list of what is compatible with IPv6 from a security and anti-spam perspective.
IPv6 Anti-virus All anti-virus measures within SmarterMail work with IPv6
IPv6 Anti-spam Declude SpamAssassin-based Pattern Matching Remote SpamAssassin Cyren Message Sniffer Custom Rules Bayesian Filtering Domain KeysDKIM URIBL
IP-based Checks Disabled for IPv6 SPF Reverse DNS RBL
Other Checks Disabled for IPv6 Greylisting Black and White Lists DOS and Brute Force Intrusion Detection
IPv6 is not supported in these versions.
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