Re: Some badmail info
- From: "John Tolmachoff \(Lists\)" <johnlist@xxxxxxxxxxxxxxxxxxx>
- To: "'[ExchangeList]'" <exchangelist@xxxxxxxxxxxxx>
- Date: Tue, 7 Sep 2004 22:56:31 -0700
Create and schedule use of a batch file.
Something on the order of:
@echo off
CD C:\Inetpub\mailroot\badmail\ (Change to reflect your actual badmail
directory)
C:
Del *.* /Y
NOTE: 2 of the above parameters need to be changed for NT 4.0. The above is
for NT 5.x.
John Tolmachoff
Engineer/Consultant/Owner
eServices For You
-----Original Message-----
From: Ozone InfoEngg [P]Ltd [mailto:aphaleabhijit@xxxxxxxxx]
Sent: Tuesday, September 07, 2004 8:42 PM
To: [ExchangeList]
Subject: [exchangelist] Re: Some badmail info
http://www.MSExchange.org/
Dear Sir,
We are facing the Problem for Exchange2000. How to solve the Problem as the
harddisk is getting full (with rate 5 MB/min)
If it is possible pl tell the solution for it
Regards
Abhijit
"Shevill, Mark M SITI-ITIBCE22" <Mark.Shevill@xxxxxxxxx> wrote:
http://www.MSExchange.org/
What happened to Badmails in Exchange 2003 SP1?
<http://blogs.msdn.com/exchange/archive/2004/07/20/188856.aspx>
What are badmails?
Badmails are mail that the Exchange server cannot deliver or NDR
(non-delivery report). A common source of badmails comes from the
unsuccessful attempt to deliver an DSN (delivery status notifiction. NDR is
a form of DSN). We keep badmails around primarily for diagnostics.
Badmails accumulate in the Exchange badmail folder (by default
Exchsrvr\Mailroot\vsi x\Badmail). Before Exchange 2003 SP1, badmails are
written to the folder until the hard disk is full.
What has changed in Exchange 2003 SP1?
In Exchange 2003 SP1, out of the box, we do not write any badmails. Anything
that is destined to badmail will disappear by default. Two regkeys are added
to adjust the related behavior. They are briefly discussed as follows and
there will eventually be a KB with more details on this.
Why did we make the change?
What we found out is that badmails are not commonly used. Many
administrators simply delete the contents of the badmail folder
periodically. Another reason is that if badmails are allowed to build up
unchecked, the server runs out of disk space eventually.
If you do not care and do not want to see badmails, Exchange 2003 SP1 is
perfect. Just install Exchange 2003 SP1, and badmails will no longer be an
issue. If you want to keep some badmails around, read on...
About the regkeys:
You will need to add these under:
HKEY_LOCAL_MACHINE\\System\\CurrentControlSet\\Services\\SMTPSVC\\Queuing
MaxBadMailFolderSize is the maximum number in kilobytes that the system will
write badmail to each badmail folder. This setting applies to all badmail
folders under the various VSI's that you may have. Once a badmail folder
hits the size, badmail will stop being written. Just to be perfectly clear,
this is NOT a circular buffer. Once the badmail folder hits the limit,
badmail writing will stop - your old badmails stay in the folder, and you
will not get any new badmails. Using a value of -1 (0xffffffff hex in
regedit) will give you the same functionality as in pre Exchange 2003 Sp1
Exchange, that is, badmails grow unbound. When the regkey is not set, it is
0: no badmail written.
BadMailSyncPeriod (in minutes) is how often Exchange looks in the system to
see if badmails have been deleted. The server caches of the size of the
badmail folder for performance reasons. This is used only when a
MaxBadMailFolderSize is specified. The default, if regkey is not set, is 12
hours.
Together with the badmail script released in WR Feb 04, there is a lot of
flexibility in dealing with badmails. Alvin Mok has written
<http://blogs.msdn.com/exchange/archive/2004/05/25/141527.aspx> about the
badmail script. You can, for example,
- Set MaxBadMailFolderSize to a number that you want to allocate
for badmails.
- Use the badmail script to archive/delete badmails periodically
as required.
Doing so will allow you to keep the badmails around for the period of time
you desire. With the regkey, you can be sure that the server only writes up
to a certain amount of badmails. Having the maximum protects your server
when tons of un-expected badmails are generated.
Mark Shevill
IMG Messaging Technical Lead
Shell Information Technology International Limited
Rowlandsway, Wythenshawe, Manchester M22 5SB, United Kingdom
Tel: +44 161 435 8709 Fax: +44 161 933 3502 Other Tel: +44 7932 625510
Email: Mark.Shevill@xxxxxxxxx
Internet: http://www.shell.com <http://www.shell.com/>
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