Option singleinstancestore in imapd.conf

[Lucas Zinato Carraro]

Hi,

i found this option in man imapd.conf

................
singleinstancestore: 1

If enabled, imapd, lmtpd and nntpd attempt to only write one copy of a
message per partition and create hard links, resulting in a
potentially large disk savings.
........................


This option works ? This option is supported when using lmtpproxyd( murder )  ?
I dont see any difference when i enable this.


Regards
Zinato