Exchange Server Toolbox > FAQ

Q: How can I enable "Receive Filter"?

A: you can enable the "Receive Filter" for Exchange Server 2003 as well as for 2007/2010. The Exchange Server will deny all mails which receive addresses don't exist in the "Active Directory" (AD).
Exchange Server 2003: You can find the settings for "Receive Filter" in the properties of message transmission.
Exchange Server 2010: The settings for "Receive Filter" in Exchange Server 2010 is described in following instruction:
• Open Exchange Server "Administration Console"
• If there is no tab for "Antispam" (Organisationconfiguration->Antispam->Hub-Transport), you have to call a script in the powershell:
„C:\Program Files\Microsoft\Exchange Server\Scripts\install-AntispamAgents.ps1“
• Restart "Transport Service"
• Now the tab "Antispam" is available
• Activate the rule "Receive Filter"

Q: How can I limit the receive connections?

A: "MaxInboundConnection":

Open powershell and type :Set-ReceiveConnector -identity "<IDENTITY>" -MaxInboundConnection 20

This parameter specifies the maximum number of inbound connections that this Receive connector serves at the same time from a single IP address. The default value is 100. The valid input range for this parameter is 1 to 10000. To disable the inbound connection per source limit on a Receive connector, enter a value of unlimited.
http://technet.microsoft.com/en-us/library/bb125140.aspx

"MaxInboundConnectionPerSource":
Open powershell and type :Set-ReceiveConnector -identity "<IDENTITY>" -MaxInboundConnectionPerSource 10

The MaxInboundConnection parameter specifies the maximum number of inbound connections that this Receive connector serves at the same time. The default value is 5000. The valid input range for this parameter is 1 to 2147483647. To disable the inbound connection limit on a Receive connector, enter a value of unlimited.
http://technet.microsoft.com/en-us/library/bb125140.aspx

Q: How can I add/remove a Snap-In to MMC?

A: For opening an empty MMC console enter "mmc" in the command shell (start->Run..) for Exchange Server 2003 or "mmc /32" for Exchange Server 2007/2010. In the MMC console you can add or remove a snap-in using File->Add/Remove Snap-In (alternatively ctrl+m).