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The default configuration is for the connector to accept email from all IP addresses, both internal and external. <br />
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Changing the accept configuration has to be done with some care. Do you have another one that accepts email from the internet for example? <br />
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Simon.
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The default configuration is for the connector to accept email from all IP addresses, both internal and external.

Changing the accept configuration has to be done with some care. Do you have another one that accepts email from the internet for example?

Simon.

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Well I do have an internet connector accepting all but I want to change it so only several machines on the network can connect to the server to send mail. &nbsp;Currently it looks like all machine can. &nbsp;I'd like to remove /24 and add the 3 servers that actually need to send.
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Well I do have an internet connector accepting all but I want to change it so only several machines on the network can connect to the server to send mail.  Currently it looks like all machine can.  I'd like to remove /24 and add the 3 servers that actually need to send.

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I think our Exchange is configured to to allow access to the entire network (all PCs on subnet) as in the default internal receive connectors (pic below). &nbsp;IS this correct?<br />
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If I only want one or two server to send mail from a tool on that server should I remove this and add individual addresses? <a href="https://filedb.experts-exchange.com/incoming/2013/11_w45/686612/mailrelay.png" target="_blank" title="mail (10 KB)"><img alt="mail" class="file-block lazyload" style="max-width: 443px;" data-src="https://filedb.experts-exchange.com/incoming/2013/11_w45/686612/mailrelay.png" /></a>
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mailrelay.png

I think our Exchange is configured to to allow access to the entire network (all PCs on subnet) as in the default internal receive connectors (pic below).  IS this correct?

If I only want one or two server to send mail from a tool on that server should I remove this and add individual addresses? 

Checking/disabling reply of PCs on the network to Exchange

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.