message vs attachment size

[Julian Field]

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On 9 Mar 2006, at 14:43, Greg Matthews wrote:
> Cant find this in the book or google:
>
> does the "maximum message size" include the whole message including
> attachments?

Yes.

> or are maximum message size and maximum attachment size
> mutually exclusive?

No.

> ie if I set maximum message size to be 15MB will it stop  
> attachments of
> 20MB?

Yes.

It's very simple, the message size is the size of the file containing  
the body of the text, for MTA's that have 2 files per message  
(sendmail and Exim). For MTA's that have 1 file per message (Postfix  
and ZMailer) it is simply the size of the file representing the  
entire message including headers and envelope data.

Yes, I know that makes the figure slightly different for different  
MTA's with the same mesage. But people only ever use it as an  
approximate figure, e.g. 10MB. No-one cares if it is 10MB + 100 bytes  
or 10MB - 100 bytes.
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Julian Field
www.MailScanner.info
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