Mailscanner changing the size of attachment

[Ed]

Pedro Bordin Hoffmann - [M]orpheus wrote:
> Hello.
>
> I'm using Mailscanner, postfix, and spamassassin.
>
> I attached a file with 36 MB, and I have limit of 40 MB in 
> Mailscanner. but it blocks my e-mail saying that the file exceeds the 
> maximum size.
> I enter in quarantine and it shows up almost 50MB the file.
>
> Why mailscanner changed the size of file?
This isn't caused by Mailscanner its just the effect of sending a binary 
file using SMTP.