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<p>Sometimes when you launch Office 365 Hybrid integration wizard from Exchange 2010, after successfully implementing the integration the IPs of Microsoft are not all imported in the &#8220;Receive Connector&#8221; for Microsoft so you might have to consider to add them manually to your on-premises Exchange server.</p>
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<p>In order to do so, Open Microsoft Exchange Management shell as Administrator and follow the following cmdlets. </p>



<p>[PS] C:\>;$RecvConn = Get-ReceiveConnector &#8220;<strong>Inbound from Office 365</strong>&#8221; </p>
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<p>[PS] C:\>;$RecvConn.RemoteIPRanges += &#8220;65.52.148.27&#8221;, &#8220;65.52.184.75&#8221;, &#8220;65.52.208.73&#8221;, &#8220;65.52.240.233&#8221;, &#8220;65.54.80.0/20&#8221;, &#8220;65.54.165.0/25&#8221;, &#8220;65.55.86.0/23&#8221;, &#8220;65.55.233.0/27&#8221;, &#8220;70.37.128.0/23&#8221;, &#8220;65.54.54.32/27&#8221;, &#8220;65.54.55.201&#8221;, &#8220;65.54.74.0/23&#8221;, &#8220;70.37.142.0/23&#8221;, &#8220;70.37.159.0/24&#8221;, &#8220;94.245.68.0/22&#8221;, &#8220;65.55.239.168&#8221;, &#8220;70.37.97.234&#8221;, &#8220;94.245.86.0/24&#8221;, &#8220;94.245.117.53&#8221;, &#8220;94.245.108.85&#8221;, &#8220;94.245.82.0/23&#8221;, &#8220;94.245.84.0/24&#8221;, &#8220;132.245.0.0/16&#8221;, &#8220;157.56.23.32/27&#8221;, &#8220;157.56.53.128/25&#8221;, &#8220;157.55.155.0/25&#8221;, &#8220;157.56.55.0/25&#8221;, &#8220;157.56.58.0/25&#8221;, &#8220;157.55.59.128/25&#8221;, &#8220;157.55.145.0/25&#8221;, &#8220;157.55.185.100&#8221;, &#8220;157.55.194.46&#8221;, &#8220;157.55.227.192/26&#8221;, &#8220;157.56.151.0/25&#8221;, &#8220;157.56.200.0/23&#8221;, &#8220;157.56.236.0/22&#8221;, &#8220;207.46.216.54&#8221;, &#8220;207.46.57.128/25&#8221;, &#8220;207.46.70.0/24&#8221;, &#8220;207.46.73.250&#8221;, &#8220;207.46.150.128/25&#8221;, &#8220;207.46.198.0/25&#8221;, &#8220;207.46.206.0/23&#8221;, &#8220;213.199.148.0/23&#8221;, &#8220;213.199.182.128/25&#8221;</p>



<p>[PS] C:\>;Set-ReceiveConnector &#8220;Inbound from Office 365&#8221; -RemoteIPRanges $RecvConn.RemoteIPRanges</p>
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<p>Hit Enter after each PS line and you will be able to find all those IPs in your connector. </p>

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