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	<title>PostfixMail.com</title>
	<atom:link href="http://postfixmail.com/blog/index.php/feed/" rel="self" type="application/rss+xml" />
	<link>http://postfixmail.com/blog</link>
	<description>Postfix Mail Server Training and Consulting</description>
	<lastBuildDate>Thu, 11 Mar 2010 19:26:28 +0000</lastBuildDate>
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		<title>Thunderbird Secure Connections</title>
		<link>http://postfixmail.com/blog/index.php/thunderbird-secure-connections/</link>
		<comments>http://postfixmail.com/blog/index.php/thunderbird-secure-connections/#comments</comments>
		<pubDate>Thu, 11 Mar 2010 19:17:05 +0000</pubDate>
		<dc:creator>mike</dc:creator>
				<category><![CDATA[Mail Client]]></category>
		<category><![CDATA[secure connections]]></category>
		<category><![CDATA[secure thunderbird]]></category>
		<category><![CDATA[thunderbird]]></category>

		<guid isPermaLink="false">http://postfixmail.com/blog/?p=937</guid>
		<description><![CDATA[Thunderbird Secure ConnectionsThunderbird Client Configuration
Client configuration can be just as big of problem as the set up for the server.  One of the problems is that not all clients, both Linux and Windows, are capable of handling TLS or SMTP AUTH.  That is getting better but it is still a problem.  One great alternative client [...]]]></description>
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		<slash:comments>0</slash:comments>
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		<item>
		<title>Configure Microsoft Outlook Express</title>
		<link>http://postfixmail.com/blog/index.php/configure-microsoft-outlook-express/</link>
		<comments>http://postfixmail.com/blog/index.php/configure-microsoft-outlook-express/#comments</comments>
		<pubDate>Mon, 01 Mar 2010 16:44:54 +0000</pubDate>
		<dc:creator>mike</dc:creator>
				<category><![CDATA[Mail Client]]></category>
		<category><![CDATA[outlook express]]></category>
		<category><![CDATA[postfix]]></category>
		<category><![CDATA[SMTP_AUTH]]></category>
		<category><![CDATA[TLS]]></category>

		<guid isPermaLink="false">http://postfixmail.com/blog/?p=923</guid>
		<description><![CDATA[Configure Microsoft Outlook ExpressConfigure Microsoft Outlook Express with TLS and SMTP_AUTH.  This is a common issue that can be overlooked by administrators for users who insist on using Outlook Express.  The set up for secure login and sending email is not intuitive.
For more information on how to configure Postfix you can consider Postfix Self-Directed Course [...]]]></description>
		<wfw:commentRss>http://postfixmail.com/blog/index.php/configure-microsoft-outlook-express/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Policy Banks with Amavis</title>
		<link>http://postfixmail.com/blog/index.php/policy-banks-with-amavis/</link>
		<comments>http://postfixmail.com/blog/index.php/policy-banks-with-amavis/#comments</comments>
		<pubDate>Fri, 19 Feb 2010 12:06:22 +0000</pubDate>
		<dc:creator>mike</dc:creator>
				<category><![CDATA[Filters]]></category>
		<category><![CDATA[amavisd-new]]></category>
		<category><![CDATA[policy banks]]></category>
		<category><![CDATA[postfix]]></category>
		<category><![CDATA[Postfix filtering]]></category>

		<guid isPermaLink="false">http://postfixmail.com/blog/?p=907</guid>
		<description><![CDATA[Policy Banks with AmavisAmavisd-new provides Policy Banks that allow you to manage messages based on the client or sender.  For example if you wanted senders to be able to send to email lists without using the server resources for scanning with Spamassassin and ClamAv for these outgoing messages you could create a Policy Bank
Solution: Specify [...]]]></description>
		<wfw:commentRss>http://postfixmail.com/blog/index.php/policy-banks-with-amavis/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Securing PostfixAdmin</title>
		<link>http://postfixmail.com/blog/index.php/securing-postfixadmin/</link>
		<comments>http://postfixmail.com/blog/index.php/securing-postfixadmin/#comments</comments>
		<pubDate>Mon, 08 Feb 2010 15:13:50 +0000</pubDate>
		<dc:creator>mike</dc:creator>
				<category><![CDATA[Postfixadmin]]></category>
		<category><![CDATA[postfix]]></category>
		<category><![CDATA[secure PostfixAdmin]]></category>

		<guid isPermaLink="false">http://postfixmail.com/blog/?p=911</guid>
		<description><![CDATA[Securing PostfixAdminSecuring the PostfixAdmin Directory on Ubuntu
Many administrators who use Postfixadmin, a web based tool to manage virtual domains on Postfix, would like to secure the transactions between the PostfixAdmin program and the administrator.  At the same time often you do not want to add the extra burden of SSL on the whole domain but [...]]]></description>
		<wfw:commentRss>http://postfixmail.com/blog/index.php/securing-postfixadmin/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Emergency: Cleaning the Active Queue</title>
		<link>http://postfixmail.com/blog/index.php/emergency-cleaning-the-active-queue/</link>
		<comments>http://postfixmail.com/blog/index.php/emergency-cleaning-the-active-queue/#comments</comments>
		<pubDate>Fri, 08 Jan 2010 03:19:33 +0000</pubDate>
		<dc:creator>mike</dc:creator>
				<category><![CDATA[Troubleshooting]]></category>
		<category><![CDATA[postfix queue]]></category>
		<category><![CDATA[sctive queue]]></category>

		<guid isPermaLink="false">http://postfixmail.com/blog/?p=903</guid>
		<description><![CDATA[Emergency: Cleaning the Active QueueWhat do you do when you massive overload of unwanted mail that is coming to your server?  Recently I saw a Postfix Mail server that had gone down some months ago but had 10s of thousands of email ready to  be sent.  When it was repaired it began sending tons of [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Spamassassin Blacklists</title>
		<link>http://postfixmail.com/blog/index.php/spamassassin-blacklists/</link>
		<comments>http://postfixmail.com/blog/index.php/spamassassin-blacklists/#comments</comments>
		<pubDate>Mon, 04 Jan 2010 17:12:23 +0000</pubDate>
		<dc:creator>mike</dc:creator>
				<category><![CDATA[Spam Control]]></category>
		<category><![CDATA[blacklists]]></category>
		<category><![CDATA[spamassasin]]></category>

		<guid isPermaLink="false">http://postfixmail.com/blog/?p=898</guid>
		<description><![CDATA[Spamassassin BlacklistsBlacklists are a little easier to understand in that you will find domains or senders that you simply do not want to receive mail from them ever.
There are two blacklist directives.  The first directive, blacklist_from will specify a a sender address that address is what will appear in the Resent-From, From, Envelope-Sender, Resent-Sender or [...]]]></description>
		<wfw:commentRss>http://postfixmail.com/blog/index.php/spamassassin-blacklists/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Spamassassin Whitelists</title>
		<link>http://postfixmail.com/blog/index.php/spamassassin-whitelists/</link>
		<comments>http://postfixmail.com/blog/index.php/spamassassin-whitelists/#comments</comments>
		<pubDate>Wed, 30 Dec 2009 15:05:35 +0000</pubDate>
		<dc:creator>mike</dc:creator>
				<category><![CDATA[Spam Control]]></category>
		<category><![CDATA[spamassassin]]></category>
		<category><![CDATA[whitelists]]></category>

		<guid isPermaLink="false">http://postfixmail.com/blog/?p=892</guid>
		<description><![CDATA[Spamassassin WhitelistsGlobal Manual Whitelist
Once you have set up Spamassassin so it is working and you have run it for some time you may want to tune it to provide automatic whitelists and blacklists.  The whitelist will provide a way to insure that the mail from a particular source will never get rejected.  This may be [...]]]></description>
		<wfw:commentRss>http://postfixmail.com/blog/index.php/spamassassin-whitelists/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Vacation Option with PostfixAdmin</title>
		<link>http://postfixmail.com/blog/index.php/vacation-option-with-postfixadmin/</link>
		<comments>http://postfixmail.com/blog/index.php/vacation-option-with-postfixadmin/#comments</comments>
		<pubDate>Thu, 24 Dec 2009 02:20:30 +0000</pubDate>
		<dc:creator>mike</dc:creator>
				<category><![CDATA[Postfixadmin]]></category>
		<category><![CDATA[Postfix Admin]]></category>
		<category><![CDATA[vacation message]]></category>

		<guid isPermaLink="false">http://postfixmail.com/blog/?p=885</guid>
		<description><![CDATA[Install and Configure the Vacation Option
This installation is for Ubuntu 9.10 but should work for just about any Linux distro.  The vacation package is nice in that you can create an automatic message for when you are not available.
You will need to install a number of packages.
sudo apt-get install libmail-sender-perl libdbd-mysql-perl libemail-valid-perl libmime-perl liblog-log4perl-perl liblog-dispatch-perl [...]]]></description>
		<wfw:commentRss>http://postfixmail.com/blog/index.php/vacation-option-with-postfixadmin/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>PostfixAdmin on Ubuntu 9.10</title>
		<link>http://postfixmail.com/blog/index.php/postfixadmin-on-ubuntu-9-10/</link>
		<comments>http://postfixmail.com/blog/index.php/postfixadmin-on-ubuntu-9-10/#comments</comments>
		<pubDate>Thu, 17 Dec 2009 12:47:56 +0000</pubDate>
		<dc:creator>mike</dc:creator>
				<category><![CDATA[Postfixadmin]]></category>
		<category><![CDATA[postfix]]></category>
		<category><![CDATA[Ubuntu 9.10 Postfix]]></category>

		<guid isPermaLink="false">http://postfixmail.com/blog/?p=868</guid>
		<description><![CDATA[PostfixAdmin on Ubuntu 9.10PostfixAdmin provides a way to manage your virtual accounts, multiple domains, using a web based interface.  Once it is set up it is very easy to use.  This install process is not easy to do as there are many commands and a lot of configuration that must be done without mistakes.  If [...]]]></description>
		<wfw:commentRss>http://postfixmail.com/blog/index.php/postfixadmin-on-ubuntu-9-10/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Postfix: Bayesian Learning System</title>
		<link>http://postfixmail.com/blog/index.php/postfix-bayesian-learning-system/</link>
		<comments>http://postfixmail.com/blog/index.php/postfix-bayesian-learning-system/#comments</comments>
		<pubDate>Sun, 22 Nov 2009 12:42:26 +0000</pubDate>
		<dc:creator>mike</dc:creator>
				<category><![CDATA[Spam Control]]></category>
		<category><![CDATA[Bayesian Filtering]]></category>
		<category><![CDATA[postfix]]></category>
		<category><![CDATA[Postfix Spam Filtering]]></category>

		<guid isPermaLink="false">http://postfixmail.com/blog/?p=661</guid>
		<description><![CDATA[Postfix: Bayesian Learning SystemLearning System
You are able to additionally tune SpamAssassin to learn about your email.  Two programs are used together to create this learning system; autowhitelisting and Bayesian filtering.  Autowhitelisting is an algorithm that learns about each senders history and modifies the spam score of their subsequent mail.  This should reduce false positives.  Autowhitelisting [...]]]></description>
		<wfw:commentRss>http://postfixmail.com/blog/index.php/postfix-bayesian-learning-system/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<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 status codes, [...]]]></description>
		<wfw:commentRss>http://postfixmail.com/blog/index.php/postfix-features/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Syslog Configuration</title>
		<link>http://postfixmail.com/blog/index.php/syslog-configuration/</link>
		<comments>http://postfixmail.com/blog/index.php/syslog-configuration/#comments</comments>
		<pubDate>Thu, 12 Nov 2009 17:44:01 +0000</pubDate>
		<dc:creator>mike</dc:creator>
				<category><![CDATA[Logs]]></category>
		<category><![CDATA[mail logs]]></category>
		<category><![CDATA[syslog]]></category>
		<category><![CDATA[syslogd]]></category>

		<guid isPermaLink="false">http://postfixmail.com/blog/?p=853</guid>
		<description><![CDATA[Syslog ConfigurationReducing Syslogd Performance Issues
Syslogd is the main logging program for many Linux systems.  Unfortunately it can cause performance issues by using synchronous writes by default.  If you open syslog.conf you will see that the mail logging goes to /var/log/mail.log.  In order to prevent synchronous writes a &#8220;-&#8221; is placed in front of the log.
mail.*                          [...]]]></description>
		<wfw:commentRss>http://postfixmail.com/blog/index.php/syslog-configuration/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Thunderbird Configuration</title>
		<link>http://postfixmail.com/blog/index.php/thunderbird-configuration/</link>
		<comments>http://postfixmail.com/blog/index.php/thunderbird-configuration/#comments</comments>
		<pubDate>Wed, 11 Nov 2009 22:07:17 +0000</pubDate>
		<dc:creator>mike</dc:creator>
				<category><![CDATA[Mail Client]]></category>
		<category><![CDATA[email client]]></category>
		<category><![CDATA[icedove]]></category>
		<category><![CDATA[secure email client]]></category>
		<category><![CDATA[thunderbird]]></category>

		<guid isPermaLink="false">http://postfixmail.com/blog/?p=837</guid>
		<description><![CDATA[Thunderbird ConfigurationThunderbird, Icedove if you are on Debian is an excellent choice for an email client especially as it is capable of connecting using SSL or TLS and SMTP AUTH.  Many email clients are not able to do that.  Why TLS, well it is all about encrypting your password and data when you connect to [...]]]></description>
		<wfw:commentRss>http://postfixmail.com/blog/index.php/thunderbird-configuration/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Create Virtual Accounts with CRAM-MD5</title>
		<link>http://postfixmail.com/blog/index.php/create-virtual-accounts-with-cram-md5/</link>
		<comments>http://postfixmail.com/blog/index.php/create-virtual-accounts-with-cram-md5/#comments</comments>
		<pubDate>Mon, 09 Nov 2009 23:40:04 +0000</pubDate>
		<dc:creator>mike</dc:creator>
				<category><![CDATA[Dovecot]]></category>
		<category><![CDATA[CRAM-MD5]]></category>
		<category><![CDATA[dovecotpw]]></category>
		<category><![CDATA[encrypted passwords]]></category>
		<category><![CDATA[mail server]]></category>

		<guid isPermaLink="false">http://postfixmail.com/blog/?p=830</guid>
		<description><![CDATA[Create Virtual Accounts with CRAM-MD5Virtual Accounts with CRAM-MD5
The major disadvantage of PLAIN text passwords on the server of course is that they are readable.  Even if your communication with the server is encrypted it is troubling to have readable passwords on the server.  You can easily change this by using the dovecotpw command and creating [...]]]></description>
		<wfw:commentRss>http://postfixmail.com/blog/index.php/create-virtual-accounts-with-cram-md5/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>SMTP Authentication</title>
		<link>http://postfixmail.com/blog/index.php/smtp-authentication/</link>
		<comments>http://postfixmail.com/blog/index.php/smtp-authentication/#comments</comments>
		<pubDate>Sun, 25 Oct 2009 12:33:11 +0000</pubDate>
		<dc:creator>mike</dc:creator>
				<category><![CDATA[SMTP AUTH]]></category>
		<category><![CDATA[mail mobile users]]></category>
		<category><![CDATA[postfix authentication]]></category>
		<category><![CDATA[smtp authentication]]></category>

		<guid isPermaLink="false">http://postfixmail.com/blog/?p=821</guid>
		<description><![CDATA[SMTP AuthenticationSMTP authentication is important because you may use it to verify mail clients independent of their IP Addresses.  Without SMTP Authentication only those IP ranges indicated in the mynetworks parameter will be allowed to connect.
So here is how it works with mynetworks. If you had a setting in the Postfix main.cf that looked like [...]]]></description>
		<wfw:commentRss>http://postfixmail.com/blog/index.php/smtp-authentication/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
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