[Marc Haber]
> Why would I want that file to exist?
If some process (e.g. a queue runner) comes along and finds that for a
particular message, the -H file exists but there is no corresponding
-D file, things might get weird.
> I suspect that taking out a lock on the header file won't work because
> the headers are subject to change during the filter run. So, a
> dedicated lock file (maybe <message-id>-L?) would be needed here. I
> can't judge how hard it is to make this change.
Me neither, although I'd guess it could reduce overall performance
rather significantly.
<ramble>
However, if it comes to changing the spool locking mechanism, one
might consider doing locking in such a way that a single spool could
be shared between multiple hosts (over e.g. NFS).
I'm in way over my head here, so please ignore me if such a thing is
obviously infeasible for some reason :)
</ramble>
--
Harald
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