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I recently &nbsp;Installed Exchange Server 2007 and some time I receive email from known address but this message go to Quarantined folder , when I checked this message in Quarantined folder I found this message <br />
&quot;Received-SPF: None (saco-edg-srv.saco-ho.com:<wbr /> Behnoush@saitou-kaikei.com<wbr /><br />
&nbsp;does not designate permitted sender hosts).<br />
can any body help me <br />

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I recently  Installed Exchange Server 2007 and some time I receive email from known address but this message go to Quarantined folder , when I checked this message in Quarantined folder I found this message 
"Received-SPF: None (saco-edg-srv.saco-ho.com: Behnoush@saitou-kaikei.com
 does not designate permitted sender hosts).
can any body help me 


does not designate permitted sender hosts

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