On Tue, 14 Aug 2007, Ben Lentz wrote:
> I've been weary of upgrading to the 2.x series, which I actually thought 
> was still beta. Anything a seasoned 0.x and 1.x user should know before 
> upgrading?

Actually there's little visibly different if you're using 1.x for just the 
basics.  Most of the work in 2.x was done in libdkim; some of it was 
bugfixes but most of it was overhauling the code to be able to deal with 
messages bearing more than one signature.

One thing you sacrifice with 2.x is the ability to sign or verify messages 
whose format followed DKIM specs earlier than the RFC.  If you need 
maximum versatility right now, don't upgrade.

2.1.1 appears to be stable, and I currently have no pending development or 
open bugs so there are no plans for newer versions at this time.  The 
to-do list is big but none of it is pressing.

Here's a quick summary since 1.2.0:

NEW FEATURES
        ClockDrift (tolerance for out-of-sync clocks)
        SyslogSuccess (logging even successful operations)
        RemoveARFrom, RemoveARAll (Authentication-Results: header removal)
        RemoveOldSignatures (remove old signatures)

VISIBLE CHANGES
        New SSP draft from the IETF working group
        New Authentication-Results: format
        Tidy up some 64-bit portability issues
        Support for DNS over TCP for handling long DNS replies
        Now handles arbitrarily large headers (was capped at 4k each)
        Clean up pid file on shutdown
        _FFR_DIFFHEADERS ("diff" old/new headers to find verification issues)
        Added buffering around the crypto functions for faster performance

THINGS REMOVED
        Support for pre-RFC signature formats

BUGS FIXED
        Crash bugs tripped by some malformed messages
        Numerous minor non-crash issues

INVISIBLE STUFF
        Lots of library cleanup
        Lots of library extensions for developers
        Full library support for multiple signatures

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