Change Max Receive Size in exchange 2007 / SBS 2008

I need to change the default 10MB Max Receive Size for exchange 2007 / SBS 2008.

I ran this scrip to get the default sizes (results below) http://gallery.technet.microsoft.com/Exchange-2007-Message-Size-514fbaf3

then I change Server Configuration > Hub Transport > Recieve Connectors > Default [ServerName] to 20MB which now reflected in the results below but the MaxReceiveSize is still 10MB

What do I need to do to change the default recieve size to 20MB?

[PS] C:\Windows\system32>$script:WarningPreference = "SilentlyContinue"
[PS] C:\Windows\system32>
[PS] C:\Windows\system32>function OutputResults ($objects){
>>
>>     If ($objects -eq $null){
>>         "" | Out-Host
>>         "" | Out-Host
>>         "Custom MaxReceiveSize or MaxSendSize not found" | Out-Host
>>         "" | Out-Host
>>         "" | Out-Host
>>     }
>>     Else{
>>         $objects | Select-Object DisplayName, MaxReceiveSize, MaxSendSize | f
l
>>     }
>> }
>>
[PS] C:\Windows\system32>"" | Out-Host

[PS] C:\Windows\system32>"Transport Config" | Out-Host
Transport Config
[PS] C:\Windows\system32>"----------------" | Out-Host
----------------
[PS] C:\Windows\system32>Get-TransportConfig | Select-Object MaxReceiveSize, Max
SendSize | fl


MaxReceiveSize : 10MB
MaxSendSize    : 10MB



[PS] C:\Windows\system32>
[PS] C:\Windows\system32>"AD Site Links" | Out-Host
AD Site Links
[PS] C:\Windows\system32>"-------------" | Out-Host
-------------
[PS] C:\Windows\system32>Get-ADSiteLink | Select-Object Name, MaxMessageSize | f
l


Name           : DEFAULTIPSITELINK
MaxMessageSize : unlimited



[PS] C:\Windows\system32>
[PS] C:\Windows\system32>"Receive Connectors" | Out-Host
Receive Connectors
[PS] C:\Windows\system32>"------------------" | Out-Host
------------------
[PS] C:\Windows\system32>Get-ReceiveConnector | Select-Object Name, Server, MaxM
essageSize | fl


Name           : Default SBSERVER
Server         : SBSERVER
MaxMessageSize : 20MB

Name           : Windows SBS Fax Sharepoint Receive SBSERVER
Server         : SBSERVER
MaxMessageSize : 10MB

Name           : Windows SBS Internet Receive SBSERVER
Server         : SBSERVER
MaxMessageSize : 10MB

Name           : Minolta C250 Scanner
Server         : SBSERVER
MaxMessageSize : 10MB



[PS] C:\Windows\system32>
[PS] C:\Windows\system32>"Send Connectors" | Out-Host
Send Connectors
[PS] C:\Windows\system32>"---------------" | Out-Host
---------------
[PS] C:\Windows\system32>Get-SendConnector | Select-Object Name, MaxMessageSize
| fl


Name           : Windows SBS Internet Send SBSERVER
MaxMessageSize : 10MB



[PS] C:\Windows\system32>
[PS] C:\Windows\system32>"Foreign Connectors" | Out-Host
Foreign Connectors
[PS] C:\Windows\system32>"------------------" | Out-Host
------------------
[PS] C:\Windows\system32>If(Get-ForeignConnector){
>>     Get-ForeignConnector | Select-Object Name, MaxMessageSize | fl
>> }
>> Else{
>>     "" | Out-Host
>>     "" | Out-Host
>>     "No Foreign Connectors Configured"
>>     "" | Out-Host
>>     "" | Out-Host
>> }
>>


Name           : Windows SBS Company Web Connector SBSERVER
MaxMessageSize : unlimited



[PS] C:\Windows\system32>"Distribution Groups" | Out-Host
Distribution Groups
[PS] C:\Windows\system32>"-------------------" | Out-Host
-------------------
[PS] C:\Windows\system32>OutputResults(Get-DistributionGroup -ResultSize Unlimit
ed | Where-Object {($_.MaxReceiveSize -ne "unlimited") -or ($_.MaxSendSize -ne "
unlimited")})


Custom MaxReceiveSize or MaxSendSize not found


[PS] C:\Windows\system32>
[PS] C:\Windows\system32>"Dynamic Distribution Groups" | Out-Host
Dynamic Distribution Groups
[PS] C:\Windows\system32>"---------------------------" | Out-Host
---------------------------
[PS] C:\Windows\system32>OutputResults(Get-DynamicDistributionGroup -ResultSize
Unlimited | Where-Object {($_.MaxReceiveSize -ne "unlimited") -or ($_.MaxSendSiz
e -ne "unlimited")})


Custom MaxReceiveSize or MaxSendSize not found


[PS] C:\Windows\system32>
[PS] C:\Windows\system32>"Mailboxes" | Out-Host
Mailboxes
[PS] C:\Windows\system32>"---------" | Out-Host
---------
[PS] C:\Windows\system32>OutputResults(Get-Mailbox -ResultSize Unlimited | Where
-Object {($_.MaxReceiveSize -ne "unlimited") -or ($_.MaxSendSize -ne "unlimited"
)})


Custom MaxReceiveSize or MaxSendSize not found


[PS] C:\Windows\system32>
[PS] C:\Windows\system32>"Mail Contacts" | Out-Host
Mail Contacts
[PS] C:\Windows\system32>"-------------" | Out-Host
-------------
[PS] C:\Windows\system32>OutputResults(Get-MailContact -ResultSize Unlimited | W
here-Object {($_.MaxReceiveSize -ne "unlimited") -or ($_.MaxSendSize -ne "unlimi
ted")})


Custom MaxReceiveSize or MaxSendSize not found


[PS] C:\Windows\system32>
[PS] C:\Windows\system32>"Mail Public Folders" | Out-Host
Mail Public Folders
[PS] C:\Windows\system32>"-------------------" | Out-Host
-------------------
[PS] C:\Windows\system32>OutputResults(Get-MailPublicFolder -ResultSize Unlimite
d | Where-Object {($_.MaxReceiveSize -ne "unlimited") -or ($_.MaxSendSize -ne "u
nlimited")})


Custom MaxReceiveSize or MaxSendSize not found


[PS] C:\Windows\system32>
[PS] C:\Windows\system32>"Mail Users" | Out-Host
Mail Users
[PS] C:\Windows\system32>"----------" | Out-Host
----------
[PS] C:\Windows\system32>OutputResults(Get-MailPublicFolder -ResultSize Unlimite
d | Where-Object {($_.MaxReceiveSize -ne "unlimited") -or ($_.MaxSendSize -ne "u
nlimited")})