I just added my SpamAssassin changes to vpopmail-5.3.19 which is now vpopmail-5.3.20.
Where's the patch to 5.3.19? No need to increment the version number, as I'll do that when coordinating with other patches that come in.
I couldn't verify Bill's problem of vdelivermail crashing when spamd wasn't running on FreeBSD 4.7 myself but I'd like to hear from others.
Well, did you actually implement FALLBACK support?