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	<title>&#34;The mind of a Mad Tech!&#34; &#187; Qmail</title>
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		<title>How to test a mail server by sending mail with telnet</title>
		<link>http://www.keithdmitchell.com/2009/02/12/how-to-test-a-mail-server-by-sending-mail-with-telnet/</link>
		<comments>http://www.keithdmitchell.com/2009/02/12/how-to-test-a-mail-server-by-sending-mail-with-telnet/#comments</comments>
		<pubDate>Thu, 12 Feb 2009 18:44:49 +0000</pubDate>
		<dc:creator>keith</dc:creator>
				<category><![CDATA[Linux]]></category>
		<category><![CDATA[Qmail]]></category>
		<category><![CDATA[mta]]></category>
		<category><![CDATA[relay]]></category>
		<category><![CDATA[sendmail]]></category>

		<guid isPermaLink="false">http://www.keithdmitchell.com/?p=142</guid>
		<description><![CDATA[Here is a simple and quick way to test a SMTP mail relay service. Use the telnet program in unix or windows to connect to port 25(SMTP) on your SMTP server. Note that windows telnet from the command line will not echo what you type so it is not recommended. telnet mail.yourdomain.com 25 You will [...]]]></description>
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		<title>How to change maximum number of connections in Qmail / Plesk</title>
		<link>http://www.keithdmitchell.com/2008/10/11/how-to-change-maximum-number-of-connections-in-qmail-plesk/</link>
		<comments>http://www.keithdmitchell.com/2008/10/11/how-to-change-maximum-number-of-connections-in-qmail-plesk/#comments</comments>
		<pubDate>Sat, 11 Oct 2008 17:11:23 +0000</pubDate>
		<dc:creator>keith</dc:creator>
				<category><![CDATA[Plesk]]></category>
		<category><![CDATA[Qmail]]></category>
		<category><![CDATA[MAXPERIP]]></category>

		<guid isPermaLink="false">http://www.keithdmitchell.com/?p=112</guid>
		<description><![CDATA[By default, the maximum number of concurrent connections from one ip in Qmail (plesk) is set to 4. Anymore than that and it will start to fail or reject the connections. Normally this isn&#8217;t an issue, but if you use an email client that tries to establish more than 4 connections at once, you will [...]]]></description>
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		<title>High CPU usage with Qmail processes</title>
		<link>http://www.keithdmitchell.com/2008/06/24/high-cpu-usage-with-qmail-processes/</link>
		<comments>http://www.keithdmitchell.com/2008/06/24/high-cpu-usage-with-qmail-processes/#comments</comments>
		<pubDate>Tue, 24 Jun 2008 18:46:07 +0000</pubDate>
		<dc:creator>keith</dc:creator>
				<category><![CDATA[Plesk]]></category>
		<category><![CDATA[Qmail]]></category>

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		<description><![CDATA[If you happen to notice that your server (dedicated or vps) is running at 100% cpu usage or close to it, and you notice the following that qmail is using all of your cpu usage; Code: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 28141 qmaild 25 0 4600 1376 1168 [...]]]></description>
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