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Do you have relay enabled <br />
right click on the virtual server then properties&gt;access tab then relay button.<br />
Is relay enabled?
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Do you have relay enabled
right click on the virtual server then properties>access tab then relay button.
Is relay enabled?

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What version of Exchange are you running?
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What version of Exchange are you running?

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Exchange Server 2003<br />
Relay is turned on only for ip address 10.1.0.0 and 10.2.0.0 (this was set up by the previous administrator)<br />

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Exchange Server 2003
Relay is turned on only for ip address 10.1.0.0 and 10.2.0.0 (this was set up by the previous administrator)


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<div class="content wysiwyg-content">
I am noticing a number of sessions with IP addresses that appear on a number of black lists. &nbsp;I have terminated these sessions and am watching it more closely but I am trying to figure out if this is a problem and how to stop them if it is. &nbsp;As I run SMTP Diagnostics from <a href="http://www.mxtoolbox.com" rel="ugc">http://www.mxtoolbox.com</a>&nbsp;I ger an error that says: &nbsp;WARNING! Your server could be an open relay.<br />
<br />
How can I see if it is, how do I turn it off if it's bad
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</div>


I am noticing a number of sessions with IP addresses that appear on a number of black lists.  I have terminated these sessions and am watching it more closely but I am trying to figure out if this is a problem and how to stop them if it is.  As I run SMTP Diagnostics from http://www.mxtoolbox.com I ger an error that says:  WARNING! Your server could be an open relay.

How can I see if it is, how do I turn it off if it's bad

Default Virtural SMTP Server

Interactions between email servers and clients are governed by email protocols. The three most common email protocols are POP, IMAP and MAPI. Most email software operates under one of these (and many products support more than one).  The correct protocol must be selected, and correctly configured, if you want your email account to work.

Email Protocols

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.