Expiry limit for the duplicate delivery database

Eric Luyten Eric.Luyten at vub.ac.be
Tue Mar 8 10:30:45 EST 2011

On Tue, March 8, 2011 4:24 pm, Gary Mills wrote:
> We are running cyrus-imapd-2.3.8 with this entry in /etc/cyrus.conf:
> delprune      cmd="cyr_expire -E 3" at=0400
> I believe this is the default setting.  Is there any reason to keep
> message IDs around for three days?  I'm wondering if reducing it to one day
> will improve performance for local deliveries simply by making the database
> smaller.  I assume that it would function equally well in detecting mail loops
> with a one-day expiry.


Correct, but bear in mind the delivery db is also used for limiting the
number of vacation replies per time unit per mail address, so you'll be
sending out quite a bit more of those, I assume.

Eric Luyten, Computing Centre VUB/ULB.

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