SBS 2008 Exchange email attachment size

I have a Microsoft SBS 2008 server. As of three months ago, I am getting a ton of emails bouncing because of the attachment size. 7mb attachments will get blocked even though the max is set to 10.

Error Message from Destination Mail Server:
   552 5.3.4 Message size exceeds fixed maximum message size

These attachments are under our limit.  I checked in the three spots in this article:

and everything was set properly. What else could be stopping this?
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increase the attachement size and check. for eg 15 mb

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Did you check the user itself. Go through the GUI sometimes that is easier.
If that does not do it post a screen shot of either the Command line or the GUI be sure and block out any personal information.
One other thing is the attachment is close at all increase the size.
Simon Butler (Sembee)ConsultantCommented:
Due to the way attachments work, a 7mb attachment can actaully be 10mb or more. It depends on what the attachment is. The reason for the bloat is the encoding method used to get it in to the email.

If you want to allow 10mb attachments, then you need a 15mb limit, as already pointed out. A 10mb limit will allow somewhere between 5 and 8mb, depending the file type.

zelfanetAuthor Commented:
OK, guys Ill just move it to 20 and see what happens.
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