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Locking Down Exchange 2010 Receive Connector

I am reviewing the Receive Connectors for a client and wanted to see how best we can lock down.
Environment is a single Exchange Server 2010 with all roles installed. The Default Connector is configured for 10.1.1.0/24 under Network > Receive Mail from ..... If I read this right, they should only have the IP Address of other Servers/Devices that send mail - not the IP Address range for local computers? So it should only list the IP Address of itself?

Please help - they are having issues being blacklisted and I think this may assist in denying client machines from sending mail. Assuming this does not preent client machines from using Outlook to send etc.

SOLUTION

Kotteeswaran Rajendran

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Simon Butler (Sembee)

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Flipp

ASKER

Thanks Simon. Although not a SBS, we do configure in a similar way to what I recall of my SBS days in Exchange. One connector to receive incoming email and open to our incoming mail filter only. The other connector is the one I wanted to get some clarity on to whether we have this configured correctly or not.

I think we have this correct now so thank you for your replies and apologies for delays. :)

Flipp

ASKER

Thank you one and all :)