Hi, I've set a property of the contentfilter config, but I want to clear that value. How do I do that ? I've used: set-contentfilterconfig -ByPassedSendersDomains somedomain.com to set the value To clear this value I'd imagine you use: set-contentfilterconfig -ByPassedSendersDomains "" But this doesn't work, I get the error: Set-ContentFilterConfig : Cannot bind parameter 'BypassedSenderDomains'. Cannot convert value "" totype "Microsoft.Exchange.Data.SmtpDomainWithSubdomains". Error: "Invalid SMTP domain" But how do I clear this value then ? Franc.

Have you tried $null ?