Anti-spam protection in Exchange Server 2013, like in previous versions, gives an opportunity to create a whitelist of trusted email addresses and senders domains, mail from which regardless of their contents should always be received.

The mail from the whitelist senders (individuals or entire domains) is considered safe and the end users receive it even if it falls within the filtering rules. The whitelist of senders in Exchange Server 2013 can only be managed from Powershell command prompt (Exchange Management Shell).

The whitelist in Exchange 2013 is configured on Mailbox or Edge Transport server with the installed Exchange anti-spam protection.

The spam filter based on the content filtering checks if the address is in the white list. To edit the white list of addresses, the cmdlet ContentFilterConfig is used. The command has the following syntax:

Set-ContentFilterConfig -BypassedSenderDomains microsoft.com

After running this command, all messages from senders in Microsoft.com domain will be received by the Exchange users regardless of their contents or attachments. (Further scanning with the Content Filter won’t take place.) You can view the current contents of domains whitelist using this command:

get-ContentFilterConfig