How to Whitelist a domain or email in Exchange 2010

If you have the Edge Transport Role installed on an Exchange 2010, mail may be rejected with the following error:

My.User@domain.com
 mail.domain.com #<mail.domain.com #5.7.1 smtp; 550 5.7.1 Message rejected as spam by Content Filtering.> #SMTP#

it appears the only way to whitelist in Exchange 2010 is through the Powershell – not the GUI.

Specific Address

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$list = (Get-ContentFilterConfig).BypassedSenders $list.add("new.mail@address.com") Set-ContentFilterConfig -BypassedSenders $list

Entire Domain

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$list = (Get-ContentFilterConfig).BypassedSenderDomains $list.add("domain.com") Set-ContentFilterConfig -BypassedSenderDomains $list

 Verify

1	Get-ContentFilterConfig