Outlook 2003 does not receive large attachments

I have Exchange Server 5.5 with mix clients (Outlook 97, 2000 & 2003). I have set the limit to 10MB at the server level. Our clients not running 2003 can receive attachments up to 10MB, but the 2003 clients can only receive up to 8MB. I have sent the exact same 8MB file to both types of clients. The 2000 client received it and the 2003 didn't. I have tested this with three 2003 clients; same results for all three. All were able to receive a 7MB file.
brianblahaAsked:
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upul007Commented:
In exchange an email gets added with other data which increases its size. I do not know why or how but it happens. So since i wanted 10MB, i had to set the limit to 13MB.

I use exchange 2003 and in message tracking, a 10MB email size gets increased varyingly. This applies to both incoming and outgoing emails.
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brianblahaAuthor Commented:
Not exactly the answer I was looking for, but it is an acceptable work-around.

Does the size of an email vary based on the client? If so, I can understand if it is bytes or KBs, but MBs?

Thanks!
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upul007Commented:
I am also not certain why. However the size increase varies between 5% and 30% of the original mail.
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