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	<title>Tech-Recipes &#187; Sendmail</title>
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			<item>
		<title>Send mail via telnet / test for open relay</title>
		<link>http://www.tech-recipes.com/rx/381/send_mail_via_telnet_test_for_open_relay/</link>
		<comments>http://www.tech-recipes.com/rx/381/send_mail_via_telnet_test_for_open_relay/#comments</comments>
		<pubDate>Mon, 09 Feb 2004 10:16:28 +0000</pubDate>
		<dc:creator>Al Banks</dc:creator>
				<category><![CDATA[Sendmail]]></category>
		<category><![CDATA[open relay]]></category>
		<category><![CDATA[telnet]]></category>

		<guid isPermaLink="false">guid-fix-me!</guid>
		<description><![CDATA[Behind the scenes, the commands sent to mail servers are simple text commands.  These commands can be to sent to an email server manually via telnet.  This is a quick way to test an email server to determine if it is an open relay.

First, determine the MX for the domain in question:
nslookup
set type=mx
mydom.com
should [...]]]></description>
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		<slash:comments>5</slash:comments>
		</item>
		<item>
		<title>sendmail: process the queue manually when the load average is high</title>
		<link>http://www.tech-recipes.com/rx/327/sendmail-process-the-queue-manually-when-the-load-average-is-high/</link>
		<comments>http://www.tech-recipes.com/rx/327/sendmail-process-the-queue-manually-when-the-load-average-is-high/#comments</comments>
		<pubDate>Tue, 13 Jan 2004 20:33:35 +0000</pubDate>
		<dc:creator>Michilimackinac</dc:creator>
				<category><![CDATA[Sendmail]]></category>

		<guid isPermaLink="false">guid-fix-me!</guid>
		<description><![CDATA[This command can be useful when the load average is high (not due to sendmail) and you want to flush all the mail off the system.

sendmail -OQueueLA=100 -q 0 -v
This will run through the queue once and process what it can (assuming of course that the load average is below 100 in this case)
Note: many [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Sendmail: Check Version, Compile Flags, System Identity</title>
		<link>http://www.tech-recipes.com/rx/326/sendmail-check-version-compile-flags-system-identity/</link>
		<comments>http://www.tech-recipes.com/rx/326/sendmail-check-version-compile-flags-system-identity/#comments</comments>
		<pubDate>Tue, 13 Jan 2004 20:28:28 +0000</pubDate>
		<dc:creator>Michilimackinac</dc:creator>
				<category><![CDATA[Sendmail]]></category>

		<guid isPermaLink="false">guid-fix-me!</guid>
		<description><![CDATA[These options to sendmail will give you some useful version and configuration information.

sendmail -d0.1 -bt < /dev/null
The output looks something like the following:
Version 8.12.9p2
 Compiled with  DNSMAP LOG MAP_REGEX MATCHGECOS MILTER MIME7TO8 MIME8TO7
                NAMED_BIND NETINET NETINET6 NETUNIX NEWDB NIS [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Sendmail: Process All Mail to a Certain User</title>
		<link>http://www.tech-recipes.com/rx/325/sendmail-process-all-mail-to-a-certain-user/</link>
		<comments>http://www.tech-recipes.com/rx/325/sendmail-process-all-mail-to-a-certain-user/#comments</comments>
		<pubDate>Tue, 13 Jan 2004 20:25:39 +0000</pubDate>
		<dc:creator>Michilimackinac</dc:creator>
				<category><![CDATA[Sendmail]]></category>

		<guid isPermaLink="false">guid-fix-me!</guid>
		<description><![CDATA[This command is useful for processing messages to a certain user (runs through the queue):

sendmail -qRjack
process all mail in which jack is a recipient
]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Sendmail: Process Mail from User</title>
		<link>http://www.tech-recipes.com/rx/324/sendmail-process-mail-from-user/</link>
		<comments>http://www.tech-recipes.com/rx/324/sendmail-process-mail-from-user/#comments</comments>
		<pubDate>Tue, 13 Jan 2004 20:23:47 +0000</pubDate>
		<dc:creator>Michilimackinac</dc:creator>
				<category><![CDATA[Sendmail]]></category>

		<guid isPermaLink="false">guid-fix-me!</guid>
		<description><![CDATA[This command is useful for processing messages from a certain user (runs through the queue):

sendmail -qSmrherman
process all messages from mrherman
]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>sendmail: command line alias expansion</title>
		<link>http://www.tech-recipes.com/rx/323/sendmail-command-line-alias-expansion/</link>
		<comments>http://www.tech-recipes.com/rx/323/sendmail-command-line-alias-expansion/#comments</comments>
		<pubDate>Tue, 13 Jan 2004 20:20:27 +0000</pubDate>
		<dc:creator>Michilimackinac</dc:creator>
				<category><![CDATA[Sendmail]]></category>

		<guid isPermaLink="false">guid-fix-me!</guid>
		<description><![CDATA[Expand an alias using the command line 

sendmail -bv 
so assuming an /etc/mail/aliases file that looks like this:

root:   ricardo
postmaster: root

An example&#8230;

# sendmail -bv postmaster
ricardo&#8230; deliverable: mailer local, user ricardo

The command will expand postmaster to root to ricardo in this case sendmail does not tell you about any aliases in the middle (e.g. root [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Sendmail debugging: watch queue processing</title>
		<link>http://www.tech-recipes.com/rx/246/sendmail-debugging-watch-queue-processing/</link>
		<comments>http://www.tech-recipes.com/rx/246/sendmail-debugging-watch-queue-processing/#comments</comments>
		<pubDate>Mon, 01 Dec 2003 22:56:33 +0000</pubDate>
		<dc:creator>Rex</dc:creator>
				<category><![CDATA[Sendmail]]></category>

		<guid isPermaLink="false">guid-fix-me!</guid>
		<description><![CDATA[In the course of troubleshooting sendmail problems, it is sometimes helpful to watch sendmail do its thing.  If there is a backlog of messages in the queue, you can run sendmail manually with a verbose option to make it act as a queue runner and see what it is doing and possibly why it [...]]]></description>
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		<slash:comments>0</slash:comments>
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