Thanks Joe.

Regards,

Mark Parris

Base IT Ltd
Active Directory Consultancy
Tel +44(0)7801 690596


-----Original Message-----
From: "joe" <[EMAIL PROTECTED]>
Date: Tue, 21 Nov 2006 18:02:51 
To:<ActiveDir@mail.activedir.org>
Subject: RE: [ActiveDir] OT: DL is this to be expected?

Yes actually it is if you are talking about Exchange DLs...

Consider how email is marked when it comes from an Exchange DL... It isn't
coming from the DL, it is coming from the user who specified the DL as an
address... The DL is simply used for routing and hiding the TO: list from
immediate view... It isn't like say this listserv where the messages come
FROM the actual DL. If I recall correctly, Exchange actually expands the
group every time it processes the rule for every single message you receive
and there is no caching of that expansion...

You actually need to be quite careful with this, I reported this as a bug to
MSFT some time ago as I watched a series of rules like that that about took
out a very high end high perf Exchange server that was scaled to support
about 4000 users which only had about 100 on it... If you want to play with
it, select some HUGE DL you have, like say an everyone in the company DL and
set up a couple of server side rules with that DL. Early last year in some
testing I was able to actually cause mail delivery in a production
enterprise class environment to be slowed down by hours doing that... Even
if I sent a message to myself... 

   joe


--
O'Reilly Active Directory Third Edition -
http://www.joeware.net/win/ad3e.htm 
 

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Mark Parris
Sent: Tuesday, November 21, 2006 4:05 AM
To: ActiveDir.org
Subject: [ActiveDir] OT: DL is this to be expected?

Morning,

When I setup an outlook 2003  rule to move all mails from a DL to a
subfolder in my inbox, I see that all mails from this DL go into this folder
no problem, but anyone who is also a member of this DL - their mail ends up
in there too and not in the inbox.

Is this added value?

Rule is move all mails as they arrive from DL to subfolder. No other logic.

Many thanks.




Regards,

Mark Parris

Base IT Ltd
Active Directory Consultancy
Tel +44(0)7801 690596
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