Based on my local test, if we configure OOF rule and use reply with, the
OOF message is replied every time when the sender sends a message to you.
Nevertheless, according to the requirement of the Adrian, only one OOF
message should be sent to sender. Whether did I miss something?
Perhaps I'm the one missing something. You said "that feature is not
available for Exchnage 2003", in response to Adrian's comment that he did not
want to use non-Out of Office rules. I comment was that, indeed Out of Office
does have rules and it appears that I can send OOO messages that vary by
sender using those rules. Perhaps I don't know to what antecedent your
inproper pronoun "that" was referring. I thought it meant Out of Office
rules.
It's also well-documented in the Microsoft Knowledgebase that the Out of
Office Assistant sends only one message to each sender (see, for example,
http://support.microsoft.com/kb/157961) so I would assume that behavior
applies whether or not there is a rule attached to the Out of Office
Assistant.
That same article mentions non-Out of Office rules (i.e., created by the Rules
Wizard) by saying "If you would like to have a reply sent for every message,
use Rules instead of the Out of Office Assistant", yet this article:
http://support.microsoft.com/kb/311107 clearly states "The Rules Wizard rule
to "reply using a specific template" is designed to send the reply only one
time to each sender during a session." These two statements cannot both be
true, as they are mutually exclusive.