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I'm having some issues figuring out exactly how to handle whitelisting multiple domains in &nbsp;the Spam Filter. &nbsp;I have been going into the management shell and using the Set-ContentFilterConfig –ByPassedSenderDomains command. &nbsp;<br />
<br />
That works fine for adding one domain but I'm having trouble maintaining a list of domains. &nbsp; I can enter multiple domains and see them listed but it seems like the filter is only applying the whitelist to the first domain in the list. &nbsp;<br />
<br />
Am I doing something completely wrong here or is there a better way to maintain a whitelist? &nbsp;Lets say I want to whitelist the following:<br />
<br />
A.com<br />
B.com<br />
C.com<br />
<br />
What is the best way to do this?
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I'm having some issues figuring out exactly how to handle whitelisting multiple domains in  the Spam Filter.  I have been going into the management shell and using the Set-ContentFilterConfig –ByPassedSenderDomains command.  

That works fine for adding one domain but I'm having trouble maintaining a list of domains.   I can enter multiple domains and see them listed but it seems like the filter is only applying the whitelist to the first domain in the list.  

Am I doing something completely wrong here or is there a better way to maintain a whitelist?  Lets say I want to whitelist the following:

A.com
B.com
C.com

What is the best way to do this?

Exchange 2010 and Content Filtering

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

Within Internet message handling services (MHS), a message transfer agent or mail transfer agent (MTA) or mail relay is software that transfers electronic mail messages from one computer to another using a client–server application architecture. A MTA implements both the client (sending) and server (receiving) portions of the Simple Mail Transfer Protocol (SMTP). The terms mail server, mail exchanger, and MX host may also refer to a computer performing the MTA function. The Domain Name System (DNS) associates a mail server to a domain with mail exchanger (MX) resource records containing the domain name of a host providing MTA services.

Email Servers

Various techniques are used to prevent email spam (unsolicited bulk email). No technique is a complete solution to the spam problem, and each has trade-offs between incorrectly rejecting legitimate email (false positives) vs. not rejecting all spam (false negatives) - and the associated costs in time and effort. Anti-spam techniques can be broken into four broad categories: those that require actions by individuals, those that can be automated by email administrators, those that can be automated by email senders and those employed by researchers and law enforcement officials.