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-virusAll anti-virus measures within SmarterMail work with IPv6
IPv6 Anti-spamDecludeSpamAssassin-based Pattern MatchingRemote SpamAssassinMessage SnifferCustom RulesBayesian FilteringDomain KeysDKIMURIBL
IP-based Checks Disabled for IPv6SPFReverse DNSRBL
Other Checks Disabled for IPv6GreylistingBlack and White ListsDOS and Brute Force Intrusion Detection
IPv6 is not supported in these versions.
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