Minor patches for builds against ancient platforms

[Timo Sirainen]

On 12 Jun 2017, at 2.09, M. Balridge <dovecot at r.paypc.com> wrote:
> 
>> I think it's just doing a lot of work on the mbox file itself 
>> (reading/writing/rewriting). Would be nice of course if it logged 
>> more information, but mbox format is a bit too legacy to spend 
>> much time on improving.
> 
> I suspect the (heavy) use of procmail on Herr Frankbox is contributing to
> either some lock "confusion" *OR* triggering dovecot to do "expensive" mbox
> re-read/syncs or something?

Have you set mbox_very_dirty_syncs=yes? That should be helpful.