05/05/01 17:50:20 .net
元ドキュメントはこれ。
URLﾘﾝｸ(asg.web.cmu.edu)
> Single Instance Store
> If a delivery attempt mentions several recipients
> (only possible if the MTA is speaking LMTP to lmtpd),
> the server attempts to store as few copies of a message as possible.
> It will store one copy of the message per partition, and create hard links
> for all other recipients of the message.