How to eliminate writing the duplicate delivery database ?

Michael Menge michael.menge at
Fri Apr 24 10:17:32 EDT 2009

Quoting Eric Luyten <Eric.Luyten at>:

> A couple weeks ago, in order to accommodate local users (not) receiving
> mail messages written by some Outlook/Exchange correspondants (Message-Id
> gets re-used...) I disabled Cyrus duplicate suppression by adding the
> following line to my imapd.conf :
>    duplicatesuppression: 0
> Somewhat naively I thought that Cyrus wouldn't be writing the duplicate
> delivery database anymore, but this is not the case.

Cyrus still needs to write to the delivery database, e.g. for vacation
messages. But it will deliver messages even if they have the same

> Is there, other than by patching the C code, a way to disable writing
> delivery.db ?

Why do you want do disable writing to the delivery.db?
> This is a Cyrus 2.2 system, upgrading to 2.3 this summer.
As far as i know it is the same with 2.3.x

M.Menge                                Tel.: (49) 7071/29-70316
Universität Tübingen                   Fax.: (49) 7071/29-5912
Zentrum für Datenverarbeitung          mail:  
michael.menge at
Wächterstraße 76
72074 Tübingen
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