Incoming mail size restrictions on Exchange 2010, SBS 2011

I have a client who wants to be able to receive messages up to 20MB in size.  They are running Exchange 2010 on an SBS 2011 box.  I have checked every setting I can find to alter the incoming mail size limits, but the server still rejects messages that are larger than 10 MB.  Below are the steps I have already taken.  What am I missing?

Set-TaransportConfig -MaxSendSize 20MB -MaxReceiveSize 20MB
Set-ReceiveConnector "All Receive Connectors" -MaxMessageSize 20MB
Set-SendConnector "All Send Connectors" -MaxMessageSize 20MB
Set-Mailbox "All Mailboxes" MaxSendSize 20MB -MaxReceiveSize 20MB

I also seem to remember changing an EMS item dealing directly with attachment size limits as well, but I can't seem to find the exact command I ran.  Below is the NDR message that I get when trying to send an email of 15MB.  Any assistance would be much appreciated.

This is a Mail server at mail.server.net

Your message could not be delivered to the following address: <photo@companyname.com>

(Unified Log Code: 6221761824, 0001)
from <myaddress@mycompany.com>
to <photo@companyname.com>
66.215.133.174 failed after I sent the message. STARTTLS proto=TLSv1; cipher=AES128-SHA.
Remote host said: 552 5.3.4 Message size exceeds fixed maximum message size


--- Below this line is a copy of the message.

Received: (qmail 18531 invoked from network); 10 Nov 2011 18:24:27 -0000
Received: from unknown (HELO mail-is-05.app.dca.reflexion.local) (10.81.14.5)
by 0 (rfx-qmail) with SMTP; 10 Nov 2011 18:24:27 -0000
Received: by mail-is-05.app.dca.reflexion.local
(Reflexion email security v6.60.1) with SMTP;
Thu, 10 Nov 2011 13:24:27 -0500 (EST)
Received: (qmail 19311 invoked from network); 10 Nov 2011 18:24:19 -0000
Received: from unknown (HELO asp.reflexion.net) (69.84.129.240)
by 0 (rfx-qmail) with (DHE-RSA-AES256-SHA encrypted) SMTP; 10 Nov 2011 18:24:19 -0000
Received: (qmail 31294 invoked from network); 10 Nov 2011 18:24:15 -0000
Received: from unknown (HELO mail-cs-03.app.dca.reflexion.local) (10.81.19.3)
by 0 (rfx-qmail) with SMTP; 10 Nov 2011 18:24:15 -0000
Received: by mail-cs-03.app.dca.reflexion.local
(Reflexion email security v6.60.1) with SMTP;
Thu, 10 Nov 2011 13:24:15 -0500 (EST)
Received: (qmail 16412 invoked from network); 10 Nov 2011 18:22:45 -0000
Received: from unknown (HELO svr-sbs03-dc01.CMPN.local) (163.243.157.68)
by 0 (rfx-qmail) with SMTP; 10 Nov 2011 18:22:45 -0000
X-MimeOLE: Produced By Microsoft Exchange V6.5
Content-class: urn:content-classes:message
MIME-Version: 1.0
Content-Type: multipart/mixed;
boundary="----_=_NextPart_001_01CC9FD5.B6A219DB"
Subject: 15 MB test
Date: Thu, 10 Nov 2011 10:20:49 -0800
Message-ID: <0D0CD092C866594A86684F61A07132D6EF59B0@svr-sbs03-dc01.CMPN.local>
X-MS-Has-Attach: yes
X-MS-TNEF-Correlator:
Thread-Topic: 15 MB test
Thread-Index: Acyf1XNM5s15ytcyTIShiH+m+AX8kQ==
From: "My Name" <myname@mycompany.com>
To: <photo@companyname.com>
X-Rfx-Message-Id: 1896820182/6221761824/0001
X-Rfx-Recipient-Address: photo@companyname.com
X-Rfx-Filter-Score: score="1 (1/na)"; threshold="MEDIUM(75)"; result="OK"
X-Rfx-Filter-Score-Summary:
1,0,0,,d41d8cd98f00b204,myname@mycompany.com,photo@companyname
.com,RULES_HIT,0,RBL:69.84.129.240:@mycompany.com:.lbl8.mailshell.net-6
2.0.0.75
64.201.201.201,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,Do
mainCache:0,MSF:not bulk,SPF:fu,MSBL:0,DNSBL:neutral,Custom_rules:0:0:0

This is a multi-part message in MIME format.

------_=_NextPart_001_01CC9FD5.B6A219DB
Content-Type: multipart/related;
boundary="----_=_NextPart_002_01CC9FD5.B6A219DB";
type="multipart/alternative"

------_=_NextPart_002_01CC9FD5.B6A219DB
Content-Type: multipart/alternative;
boundary="----_=_NextPart_003_01CC9FD5.B6A219DB"

------_=_NextPart_003_01CC9FD5.B6A219DB
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: quoted-printable

Fingers crossed=21

=20