Release 2.68 is mostly a bug-fix release; the most important changes are:

• Detect Sys::Syslog vs. Unix::Syslog at run-time rather than when running ./configure.
• Bug fix: Don't change Content-Disposition to "inline" by default. This was causing weird bugs with Outlook iCalendar attachments.
• Various crash fixes.
• Make relay_is_blacklisted and relay_is_blacklisted_multi handle IPv6 addresses.
• Make the C code call smfi_setmlreply if the milter library supports it and the Perl code returns a multi-line reply.