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	<title>PostfixMail.com &#187; Postfix Configuration</title>
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	<link>http://postfixmail.com/blog</link>
	<description>Postfix Mail Server Training and Consulting</description>
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		<title>Postfix Features</title>
		<link>http://postfixmail.com/blog/index.php/postfix-features/</link>
		<comments>http://postfixmail.com/blog/index.php/postfix-features/#comments</comments>
		<pubDate>Sat, 14 Nov 2009 16:23:19 +0000</pubDate>
		<dc:creator>mike</dc:creator>
				<category><![CDATA[Postfix Configuration]]></category>
		<category><![CDATA[postfix]]></category>
		<category><![CDATA[postfix features]]></category>

		<guid isPermaLink="false">http://postfixmail.com/blog/?p=850</guid>
		<description><![CDATA[Postfix FeaturesSometimes when you are working with Postfix you may be on an older version that does not support a feature you need.  Here is a list of the version and the major features that were added for that version. Postfix 2.5 Stress-dependent configuration Postfix 2.3 DKIM, DomainKeys and SenderID authentication, DSN status notifications, Enhanced [...]]]></description>
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		<slash:comments>0</slash:comments>
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		<item>
		<title>Changes in Postfix for Ubuntu 9.10</title>
		<link>http://postfixmail.com/blog/index.php/changes-in-postfix-for-ubuntu-9-10/</link>
		<comments>http://postfixmail.com/blog/index.php/changes-in-postfix-for-ubuntu-9-10/#comments</comments>
		<pubDate>Fri, 25 Sep 2009 12:40:59 +0000</pubDate>
		<dc:creator>mike</dc:creator>
				<category><![CDATA[Postfix Configuration]]></category>
		<category><![CDATA[postconf]]></category>
		<category><![CDATA[postconf -n]]></category>
		<category><![CDATA[Ubuntu 9.10]]></category>
		<category><![CDATA[Ubuntu postfix]]></category>

		<guid isPermaLink="false">http://postfixmail.com/blog/?p=802</guid>
		<description><![CDATA[Changes in Postfix for Ubuntu 9.10The postcont -n command for Postfix shows you changes made to the default configuration.  Here is a listing of the new Ubuntu 9.10 and the output for Postfix.  As you can see nothing too significant except you see a focus on TLS for secure communication which is great, however this [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Why Do You Use Postfix?</title>
		<link>http://postfixmail.com/blog/index.php/why-do-you-use-postfix/</link>
		<comments>http://postfixmail.com/blog/index.php/why-do-you-use-postfix/#comments</comments>
		<pubDate>Tue, 25 Aug 2009 23:26:56 +0000</pubDate>
		<dc:creator>mike</dc:creator>
				<category><![CDATA[Postfix Configuration]]></category>
		<category><![CDATA[postfix]]></category>
		<category><![CDATA[Postfix Mail Server]]></category>
		<category><![CDATA[Postfix Server]]></category>

		<guid isPermaLink="false">http://postfixmail.com/blog/?p=786</guid>
		<description><![CDATA[Recently we asked administrators why they used Postfix Mail Server.  Here are some of the responses: &#8220;Being able to manage users and pretty much all mail aspects from a MySQL table&#8221; &#8220;Security.  Postfix is rock solid and I do not have to worry about the security of the system once it is set up correctly&#8221; [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Ubuntu 9.04 Postfix Install Evaluation</title>
		<link>http://postfixmail.com/blog/index.php/ubuntu-904-postfix-install-evaluation/</link>
		<comments>http://postfixmail.com/blog/index.php/ubuntu-904-postfix-install-evaluation/#comments</comments>
		<pubDate>Tue, 21 Apr 2009 12:48:16 +0000</pubDate>
		<dc:creator>mike</dc:creator>
				<category><![CDATA[Postfix Configuration]]></category>
		<category><![CDATA[Dovecot]]></category>
		<category><![CDATA[postfix]]></category>
		<category><![CDATA[Ubuntu 9.04]]></category>

		<guid isPermaLink="false">http://postfixmail.com/blog/?p=629</guid>
		<description><![CDATA[One of the newest features of Ubuntu 9.04 is the Postfix Mail Server/Dovecot enhancements to make it easier to set up a mail server.  This article is a review of those improvements and a tutorial on how to fix several problems that were experienced. Before you jump to any conclusions about the new features it [...]]]></description>
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		<slash:comments>0</slash:comments>
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		<title>Explanation of notify_classes in Postfix</title>
		<link>http://postfixmail.com/blog/index.php/explanation-of-notify_classes-in-postfix/</link>
		<comments>http://postfixmail.com/blog/index.php/explanation-of-notify_classes-in-postfix/#comments</comments>
		<pubDate>Thu, 26 Feb 2009 01:13:35 +0000</pubDate>
		<dc:creator>mike</dc:creator>
				<category><![CDATA[Postfix Configuration]]></category>
		<category><![CDATA[notify_classes]]></category>
		<category><![CDATA[Posfix configuration]]></category>

		<guid isPermaLink="false">http://postfixmail.com/blog/?p=434</guid>
		<description><![CDATA[The notify_classes allows you to send mail reports to the postmaster.  This is additional information that is not usually reported because only the worst situations are typically reported.  Here is a list of the notify_classes that you can use.  The default for Postfix is to use resource and software. bounce – This option will send [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Manage Mail In the Deferred Queue</title>
		<link>http://postfixmail.com/blog/index.php/manage-mail-in-the-deferred-queue/</link>
		<comments>http://postfixmail.com/blog/index.php/manage-mail-in-the-deferred-queue/#comments</comments>
		<pubDate>Wed, 18 Feb 2009 13:48:59 +0000</pubDate>
		<dc:creator>mike</dc:creator>
				<category><![CDATA[Postfix Configuration]]></category>
		<category><![CDATA[deferred queue]]></category>
		<category><![CDATA[postfix]]></category>
		<category><![CDATA[postfix mail serve]]></category>
		<category><![CDATA[Postfix MTA]]></category>

		<guid isPermaLink="false">http://postfixmail.com/blog/?p=402</guid>
		<description><![CDATA[Deferred  queue If Postfix cannot deliver a message to a recipient it is placed in the deferred queue.  The queue manager will scan the deferred queue to see it if can place mail back into the active queue.  How often this scan occurs is determined by the queue_run_delay.  Postfix will scan the incoming queue at [...]]]></description>
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		<slash:comments>2</slash:comments>
		</item>
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		<title>Postfix Default Settings</title>
		<link>http://postfixmail.com/blog/index.php/postfix-default-settings/</link>
		<comments>http://postfixmail.com/blog/index.php/postfix-default-settings/#comments</comments>
		<pubDate>Sat, 27 Dec 2008 13:04:21 +0000</pubDate>
		<dc:creator>mike</dc:creator>
				<category><![CDATA[Postfix Configuration]]></category>
		<category><![CDATA[posftix default settings]]></category>
		<category><![CDATA[postfix]]></category>

		<guid isPermaLink="false">http://postfixmail.com/blog/?p=338</guid>
		<description><![CDATA[You can list the default settings with Postfix with this command: postconf -d 2bounce_notice_recipient = postmaster access_map_reject_code = 554 address_verify_default_transport = $default_transport address_verify_local_transport = $local_transport address_verify_map = address_verify_negative_cache = yes address_verify_negative_expire_time = 3d address_verify_negative_refresh_time = 3h address_verify_poll_count = 3 address_verify_poll_delay = 3s address_verify_positive_expire_time = 31d address_verify_positive_refresh_time = 7d address_verify_relay_transport = $relay_transport address_verify_relayhost = $relayhost address_verify_sender [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Queue Management</title>
		<link>http://postfixmail.com/blog/index.php/queue-management/</link>
		<comments>http://postfixmail.com/blog/index.php/queue-management/#comments</comments>
		<pubDate>Wed, 08 Oct 2008 11:25:54 +0000</pubDate>
		<dc:creator>mike</dc:creator>
				<category><![CDATA[Postfix Configuration]]></category>
		<category><![CDATA[mailserver queue]]></category>
		<category><![CDATA[postfix]]></category>
		<category><![CDATA[queue]]></category>

		<guid isPermaLink="false">http://postfixmail.com/blog/?p=232</guid>
		<description><![CDATA[Understanding the mail queues, what they do and how they work are important steps to Postfix configuration.  Here are the queues listed with a summary of what they do and where they are located. Incoming The incoming queue is the location a message is sent once it has entered the system through SMTP or qmqpd  [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Postfix Relay Control</title>
		<link>http://postfixmail.com/blog/index.php/postfix-relay-control/</link>
		<comments>http://postfixmail.com/blog/index.php/postfix-relay-control/#comments</comments>
		<pubDate>Sun, 14 Sep 2008 16:28:02 +0000</pubDate>
		<dc:creator>mike</dc:creator>
				<category><![CDATA[Postfix Configuration]]></category>
		<category><![CDATA[Mail Server Relays]]></category>
		<category><![CDATA[Postfix Relays]]></category>

		<guid isPermaLink="false">http://postfixmail.com/blog/?p=82</guid>
		<description><![CDATA[Control Relays Controlling which domains can relay mail through Postfix is a very important setting. You certainly will need to relay mail from the domain that Postfix is on. You do not want Postfix to relay mail from other sources, unless they are domains that you control as you will end up begin an open [...]]]></description>
		<wfw:commentRss>http://postfixmail.com/blog/index.php/postfix-relay-control/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Postfix Map Types</title>
		<link>http://postfixmail.com/blog/index.php/postifx-map-types/</link>
		<comments>http://postfixmail.com/blog/index.php/postifx-map-types/#comments</comments>
		<pubDate>Sun, 14 Sep 2008 15:39:06 +0000</pubDate>
		<dc:creator>mike</dc:creator>
				<category><![CDATA[Postfix Configuration]]></category>
		<category><![CDATA[Map Types]]></category>
		<category><![CDATA[postfix]]></category>
		<category><![CDATA[Postfix Map Types]]></category>

		<guid isPermaLink="false">http://postfixmail.com/blog/?p=62</guid>
		<description><![CDATA[Maps are the files and databases created from files that are used to look up information. The basic structure of maps are two columns, a left-hand side (key) and a right-hand side (value). key value Postfix uses a number of map types. These maps are critical to Postfix looking up information quickly. To view the [...]]]></description>
		<wfw:commentRss>http://postfixmail.com/blog/index.php/postifx-map-types/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Postfix Lookup Tables</title>
		<link>http://postfixmail.com/blog/index.php/postfix-lookup-tables/</link>
		<comments>http://postfixmail.com/blog/index.php/postfix-lookup-tables/#comments</comments>
		<pubDate>Sun, 14 Sep 2008 15:14:46 +0000</pubDate>
		<dc:creator>mike</dc:creator>
				<category><![CDATA[Postfix Configuration]]></category>
		<category><![CDATA[Lookup Tables]]></category>
		<category><![CDATA[postfix]]></category>
		<category><![CDATA[Postfix Lookup Tables]]></category>

		<guid isPermaLink="false">http://postfixmail.com/blog/?p=51</guid>
		<description><![CDATA[Lookup Tables are simple tables that allow Postfix to access configuration information that it needs. An example is when an organization would like to rewrite the email addresses so that they look different to outside clients. The parameter canonical_maps is the file that is used to make these changes and is used as a Lookup [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Postfix Mail Limits</title>
		<link>http://postfixmail.com/blog/index.php/postfix-mail-limits/</link>
		<comments>http://postfixmail.com/blog/index.php/postfix-mail-limits/#comments</comments>
		<pubDate>Sun, 14 Sep 2008 15:08:17 +0000</pubDate>
		<dc:creator>mike</dc:creator>
				<category><![CDATA[Postfix Configuration]]></category>
		<category><![CDATA[postfix]]></category>
		<category><![CDATA[Postfix Mail Limits]]></category>

		<guid isPermaLink="false">http://postfixmail.com/blog/?p=48</guid>
		<description><![CDATA[Managing Mail Limits The main.cf file contains several settings to manage mail limits. Limit Recipients This parameter limits the number of recipients for a single message. The default is 1000 set in the smtpd_recipient_limit setting. Message Size Limit The message size is restricted to 10 MB by default. This is a setting that you will [...]]]></description>
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		<slash:comments>0</slash:comments>
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