87 lines
6.2 KiB
HTML
87 lines
6.2 KiB
HTML
<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="DC.Type" content="task" />
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<meta name="DC.Title" content="Restrict relays" />
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<meta name="abstract" content="A common concern that you might face is protecting your server from people who try to use your e-mail server for spamming, or sending large amounts of bulk e-mail. To avoid these problems, use the relay restriction function to specify as closely as possible who can use your server for relay." />
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<meta name="description" content="A common concern that you might face is protecting your server from people who try to use your e-mail server for spamming, or sending large amounts of bulk e-mail. To avoid these problems, use the relay restriction function to specify as closely as possible who can use your server for relay." />
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<meta name="DC.Relation" scheme="URI" content="rzairrzairsecurity.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzairpopbeforesmtp.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzairrestrictrelayconnect.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzairplanseccontrol.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2004, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 2004, 2006" />
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Restrict relays</title>
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</head>
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<body id="rzairneardomain"><a name="rzairneardomain"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Restrict relays</h1>
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<div><p>A common concern that you might face is protecting your server
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from people who try to use your e-mail server for spamming, or sending large
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amounts of bulk e-mail. To avoid these problems, use the relay restriction
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function to specify as closely as possible who can use your server for relay. </p>
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<div class="section"><p>You have six options for allowing relay:</p>
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<ul><li>Allow all relay messages</li>
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<li>Block all relay messages</li>
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<li>Accept relay messages for only recipients in the near domains list</li>
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<li>Accept relay messages from only the address relay list</li>
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<li>Accept relay messages using both the near domains and address relay lists</li>
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<li>Accept relay messages from POP clients for a specified period of time</li>
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</ul>
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<p>To specify users that can send e-mail to the Internet, follow these
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steps:</p>
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</div>
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<ol><li class="stepexpand"><span>In iSeries™ Navigator,
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expand <span class="menucascade"><span class="uicontrol">your iSeries Server</span> > <span class="uicontrol">Network</span> > <span class="uicontrol">Servers</span> > <span class="uicontrol">TCP/IP</span></span>.</span></li>
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<li class="stepexpand"><span>Right-click <span class="uicontrol">SMTP</span> and select <span class="uicontrol">Properties</span>.</span></li>
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<li class="stepexpand"><span>Click the <span class="uicontrol">Relay Restrictions</span> tab.</span></li>
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<li class="stepexpand"><span>Select the appropriate relay restriction from the six options offered
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here.</span> <div class="note"><span class="notetitle">Note:</span> If you choose <span class="uicontrol">Accept relay messages for
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only recipients in the near domains list</span> or <span class="uicontrol">Accept
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relay messages using both the near domains and address relay lists</span>,
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then you will need to click the <span class="uicontrol">General</span> tab to list
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the near domains from which you are accepting relay.</div>
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</li>
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<li class="stepexpand"><span>Click <span class="uicontrol">Help</span> for more information.</span></li>
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<li class="stepexpand"><span>Click <span class="uicontrol">OK</span>.</span></li>
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<li class="stepexpand"><span>If the SMTP server is currently running, you need to end and restart
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the SMTP server for the changes to take effect: </span><ol type="a"><li><span>Right-click <span class="uicontrol">SMTP</span> and select <span class="uicontrol">Stop</span>.</span></li>
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<li><span>Right-click <span class="uicontrol">SMTP</span> and select <span class="uicontrol">Start</span>.</span></li>
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</ol>
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</li>
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</ol>
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</div>
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<div>
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<ul class="ullinks">
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<li class="ulchildlink"><strong><a href="rzairpopbeforesmtp.htm">Accept relay messages from Post Office Protocol clients</a></strong><br />
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One of the options for relay restriction enables Post Office Protocol (POP) clients to relay messages through Simple Mail Transfer Protocol (SMTP) for a specified period of time after they log on to the POP server.</li>
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<li class="ulchildlink"><strong><a href="rzairrestrictrelayconnect.htm">Use relay restriction and connection restriction functions together</a></strong><br />
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<span>i5/OS™ enables you to use the relay restriction
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function along with the connection restriction function to carefully control
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who can access your e-mail server.</span></li>
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</ul>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzairrzairsecurity.htm" title="You can learn the procedures for using firewalls, restricting relays and connections, and filtering out viruses.">Secure e-mail</a></div>
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</div>
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<div class="relconcepts"><strong>Related concepts</strong><br />
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<div><a href="rzairplanseccontrol.htm" title="You should control who accesses your server through e-mail to protect your data from malicious attacks.">Control e-mail access</a></div>
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</div>
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</div>
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</body>
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</html> |