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Exchange 2003 Email Attachment limits not working.

Posted on 2007-03-19
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Last Modified: 2007-11-27
Running Exchange 2003 SP2 on Windows 2003 SP1 Cluster Servers.

When we first setup Exchange we had a limit of 10MB for sending and receiving attachments.  This was set under Global Settings--> Message Delivery-->
So due to the increase in size of the exchange database files.  I lowered the limit to 5MB for sending only.  I left the "receive" to 10MB

Now users whose emails that are coming from hotmail with 8MB are generating NDRs:
       This message is larger than the current system limit or the recipient's mailbox is full.  Create a shorter message body or remove attachments and try sending it again.
            <xxxx.domain.com #5.2.3>

I even took increased the limits to 10MB on this one user.  It still doesn't work.  

1) Do I have to restart something for it to take place?  

2) Do I have to set the SMTP's Message Size limits?
Currently he box is unchecked for both "Limit message size to (KB)" and "Limit Session size to (KB):

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Question by:abraham808
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redseatechnologies earned 500 total points
ID: 18751620
There is an issue where the sending and receiving limits will apply to each other.

Ahh, here it is; http://support.microsoft.com/kb/298572

It is by design - apparently, they are just incorrectly named and should only be one option...

Out of interest, what makes you think lowering the sending limit will decrease your database size?
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by:abraham808
ID: 18751719
Thank you for the comment.  
So shouldn't it work on that one user?  I set her limit to 10MB.  I know this worked before.  Do I have to restart something for it to take place sooner?

Lastly..I didn't say it would decrease the db size (unless i defrag), it would however keep it growing so quickly.  The users use Exchange as a file server.  So i wanted to stop that by lowering the limits.
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Expert Comment

by:redseatechnologies
ID: 18751772
>>So shouldn't it work on that one user?

When were we talking about 1 user?  You have only spoken about global settings.

Personally, I have always found that the harshest rules apply - MS don't even agree as to how it works (some guides say harshest rules apply, others say that user settings override global settings).

>Lastly..I didn't say it would decrease the db size (unless i defrag), it would however keep it growing so quickly.  The users use Exchange as a file server.  So i wanted to stop that by lowering the limits.

Right, my point was, wouldn't you decrease the incoming limit for that?  Either way, it was just a query - if you are happy with it, then that is fine.
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by:abraham808
ID: 18752167
In the orginal question I mentioned  

"I even took increased the limits to 10MB on this one user.  It still doesn't work.  "
I meant to say " I even tried to...."
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Expert Comment

by:redseatechnologies
ID: 18753141
ahhh yes, don't know how I missed that :/

Anyway, same applies as here;

"Personally, I have always found that the harshest rules apply - MS don't even agree as to how it works (some guides say harshest rules apply, others say that user settings override global settings)."
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by:abraham808
ID: 18753794
But i should be able to change the settings for 1 user correct?
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by:redseatechnologies
ID: 18753800
No, I don't think so - and have seen varying results.
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by:abraham808
ID: 18756330
Is there a priority with the SMTP settings?  Is it Outgoing only , Incoming only or both?  

If a user needs to send a large attahment externally, can i set the limits on the SMTP connecter?
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Assisted Solution

by:redseatechnologies
redseatechnologies earned 500 total points
ID: 18759660
Harshest rules apply - if the global setting is 10mb, but the SMTP connector is 20MB, you are limited to 10mb
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Expert Comment

by:redseatechnologies
ID: 18767239
Here is some more information (and one of my new favourite links)

http://www.experts-exchange.com/OS/Microsoft_Operating_Systems/Server/Windows_2003_Active_Directory/Q_22461605.html

It pretty much confirms what I have said above
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