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	<title>KutuKupret &#187; smtp</title>
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	<link>http://www.kutukupret.com</link>
	<description>My Colourful Website ;)</description>
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		<item>
		<title>postfix 2.8-20100213 postscreen</title>
		<link>http://www.kutukupret.com/2010/03/14/postfix-2-8-20100213-postscreen/</link>
		<comments>http://www.kutukupret.com/2010/03/14/postfix-2-8-20100213-postscreen/#comments</comments>
		<pubDate>Sun, 14 Mar 2010 06:48:42 +0000</pubDate>
		<dc:creator>leenoux</dc:creator>
				<category><![CDATA[email]]></category>
		<category><![CDATA[postfix]]></category>
		<category><![CDATA[smtp]]></category>
		<category><![CDATA[postscreen]]></category>
		<category><![CDATA[smtpd]]></category>

		<guid isPermaLink="false">http://www.kutukupret.com/?p=827</guid>
		<description><![CDATA[I&#8217;ve been experimenting with postfix 2.8-20100213 &#8220;postscreen&#8221; feature on my development server.this feature is very usefull for detecting/dropping misbehavior smtp client. Configuration : main.cf master.cf Logs But i think i&#8217;ll wait until this feature is in stable release stage before applying on production machine]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Postfix Smtp Outgoing IP Rotator using iptables</title>
		<link>http://www.kutukupret.com/2009/11/30/postfix-smtp-outgoing-ip-rotator-using-iptables/</link>
		<comments>http://www.kutukupret.com/2009/11/30/postfix-smtp-outgoing-ip-rotator-using-iptables/#comments</comments>
		<pubDate>Mon, 30 Nov 2009 02:14:21 +0000</pubDate>
		<dc:creator>leenoux</dc:creator>
				<category><![CDATA[iptables]]></category>
		<category><![CDATA[postfix]]></category>
		<category><![CDATA[smtp]]></category>
		<category><![CDATA[outgoing]]></category>
		<category><![CDATA[statistic module]]></category>

		<guid isPermaLink="false">http://www.kutukupret.com/?p=655</guid>
		<description><![CDATA[This is the scheme e.g: I got 5 Public IPs. i&#8217;m Gonna configure them, so Postfix can use multiple interfaces/ips for outgoing smtp connections. First we need creating Interface aliases for those 5 public IPs. In my system, using fedora: Edit ifcfg-eth0:1 Change DEVICE and IPADDR parameters We can continue with next interfaces for IP <a href='http://www.kutukupret.com/2009/11/30/postfix-smtp-outgoing-ip-rotator-using-iptables/'>[...]</a>]]></description>
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		<slash:comments>42</slash:comments>
		</item>
		<item>
		<title>Postfix smtp outgoing load balancing</title>
		<link>http://www.kutukupret.com/2009/10/03/postfix-smtp-outgoing-load-balancing/</link>
		<comments>http://www.kutukupret.com/2009/10/03/postfix-smtp-outgoing-load-balancing/#comments</comments>
		<pubDate>Sat, 03 Oct 2009 08:17:17 +0000</pubDate>
		<dc:creator>leenoux</dc:creator>
				<category><![CDATA[load balance]]></category>
		<category><![CDATA[postfix]]></category>
		<category><![CDATA[load balancer]]></category>
		<category><![CDATA[load balancing]]></category>
		<category><![CDATA[mta]]></category>
		<category><![CDATA[mx]]></category>
		<category><![CDATA[smtp]]></category>
		<category><![CDATA[smtp outgoing]]></category>

		<guid isPermaLink="false">http://www.kutukupret.com/?p=317</guid>
		<description><![CDATA[I got good workaround for balancing smtp outgoing from postfix mailing list archives(not using expensive real load balancer). suppose we have 4 smtp servers for outgoing email, and we need to configure/load balance like this: +------------+ &#124; &#124; +----------&#62; smtp backend a --------&#62;&#124; &#124; &#124; &#124; &#124; clients --------&#62; smtp lb -----&#62; smtp backend b <a href='http://www.kutukupret.com/2009/10/03/postfix-smtp-outgoing-load-balancing/'>[...]</a>]]></description>
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		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>vmware ESXi 4 + centos 5.3 guest OS + zimbra</title>
		<link>http://www.kutukupret.com/2009/09/25/vmware-esxi-4-centos-5-3-guest-os-zimbra/</link>
		<comments>http://www.kutukupret.com/2009/09/25/vmware-esxi-4-centos-5-3-guest-os-zimbra/#comments</comments>
		<pubDate>Fri, 25 Sep 2009 04:25:23 +0000</pubDate>
		<dc:creator>leenoux</dc:creator>
				<category><![CDATA[centos]]></category>
		<category><![CDATA[email]]></category>
		<category><![CDATA[smtp]]></category>
		<category><![CDATA[LDAP]]></category>
		<category><![CDATA[mta]]></category>
		<category><![CDATA[nginx]]></category>
		<category><![CDATA[postfix]]></category>
		<category><![CDATA[vmware ESXi 4]]></category>
		<category><![CDATA[webmail]]></category>
		<category><![CDATA[ZCS]]></category>
		<category><![CDATA[Zimbra]]></category>

		<guid isPermaLink="false">http://www.kutukupret.com/?p=265</guid>
		<description><![CDATA[I&#8217;ve been playing around with Zimbra opensource edition on my development server. Zimbra is a full-featured, open source collaboration suite for  email, group calendaring, contacts, and web document management and authoring. web interface is equipped with AJAX and it is compatible with clients such as Outlook, Apple Mail, and Novell Evolution so that mail, contacts, <a href='http://www.kutukupret.com/2009/09/25/vmware-esxi-4-centos-5-3-guest-os-zimbra/'>[...]</a>]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Setup Google Apps For your Personal eMail</title>
		<link>http://www.kutukupret.com/2009/09/20/setup-google-apps-for-your-personal-email/</link>
		<comments>http://www.kutukupret.com/2009/09/20/setup-google-apps-for-your-personal-email/#comments</comments>
		<pubDate>Sun, 20 Sep 2009 09:48:52 +0000</pubDate>
		<dc:creator>leenoux</dc:creator>
				<category><![CDATA[email]]></category>
		<category><![CDATA[Google]]></category>
		<category><![CDATA[smtp]]></category>
		<category><![CDATA[dns]]></category>
		<category><![CDATA[google apps]]></category>

		<guid isPermaLink="false">http://www.kutukupret.com/?p=211</guid>
		<description><![CDATA[I was realy surprised at how easy it was to set up hosting using google apps. Fisrt of all, all we need is just go here and fill out the application. if you&#8217;re using it for family, private user or non-profit organisation google apps is freely to use. Of course we can Upgrade to Google <a href='http://www.kutukupret.com/2009/09/20/setup-google-apps-for-your-personal-email/'>[...]</a>]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Postfix + DNSWL</title>
		<link>http://www.kutukupret.com/2009/09/12/postfix-dnswl/</link>
		<comments>http://www.kutukupret.com/2009/09/12/postfix-dnswl/#comments</comments>
		<pubDate>Sat, 12 Sep 2009 09:39:30 +0000</pubDate>
		<dc:creator>leenoux</dc:creator>
				<category><![CDATA[dnswl]]></category>
		<category><![CDATA[postfix]]></category>
		<category><![CDATA[rbl]]></category>
		<category><![CDATA[smtp]]></category>

		<guid isPermaLink="false">http://www.kutukupret.com/?p=176</guid>
		<description><![CDATA[Sometimes we need to do manual whitelisting for mail users whose customers&#8217; admins don&#8217;t respond to your complaints about their server settings. Another option to consider ist automatic whitelisting by using the hand-crafted DNSWL ( http://www.dnswl.org/ ). We should also consider requesting to get added to DNSWL. dnswl-update.sh In /etc/postfix/main.cf add this line within the <a href='http://www.kutukupret.com/2009/09/12/postfix-dnswl/'>[...]</a>]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Postfix stress test</title>
		<link>http://www.kutukupret.com/2009/09/11/postfix-stress-test/</link>
		<comments>http://www.kutukupret.com/2009/09/11/postfix-stress-test/#comments</comments>
		<pubDate>Fri, 11 Sep 2009 02:10:30 +0000</pubDate>
		<dc:creator>leenoux</dc:creator>
				<category><![CDATA[postfix]]></category>
		<category><![CDATA[smtp]]></category>
		<category><![CDATA[benchmark]]></category>
		<category><![CDATA[smtp-sink]]></category>
		<category><![CDATA[smtp-source]]></category>

		<guid isPermaLink="false">http://www.kutukupret.com/?p=168</guid>
		<description><![CDATA[Source: The Book of Postfix by Ralf Hildebrandt and Patrick Koetter. In order to measure how much traffic our postfix  can handle, we need to perform some kind of stress testing. To put an adequate load on the server, We need a fast mail traffic generator. Postfix comes with two  programs named smtp-source and smtp-sink <a href='http://www.kutukupret.com/2009/09/11/postfix-stress-test/'>[...]</a>]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Extended SMTP</title>
		<link>http://www.kutukupret.com/2009/09/09/extended-smtp/</link>
		<comments>http://www.kutukupret.com/2009/09/09/extended-smtp/#comments</comments>
		<pubDate>Wed, 09 Sep 2009 06:39:39 +0000</pubDate>
		<dc:creator>leenoux</dc:creator>
				<category><![CDATA[postfix]]></category>
		<category><![CDATA[smtp]]></category>
		<category><![CDATA[esmtp]]></category>

		<guid isPermaLink="false">http://www.kutukupret.com/?p=151</guid>
		<description><![CDATA[Extended SMTP Extended SMTP (ESMTP), sometimes referred to as Enhanced SMTP,is a definition of protocol extensions to the Simple Mail Transfer Protocol standard. The extension format was defined in IETF publication RFC 1869 (1995) which established a general structure for all existing and future extensions. ESMTP defines consistent and manageable means by which ESMTP clients <a href='http://www.kutukupret.com/2009/09/09/extended-smtp/'>[...]</a>]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Postfix IPv6 + SPF (sender policy framework)</title>
		<link>http://www.kutukupret.com/2009/08/08/postfix-ipv6-spf-sender-policy-framework/</link>
		<comments>http://www.kutukupret.com/2009/08/08/postfix-ipv6-spf-sender-policy-framework/#comments</comments>
		<pubDate>Sat, 08 Aug 2009 09:32:32 +0000</pubDate>
		<dc:creator>leenoux</dc:creator>
				<category><![CDATA[ipv6]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[postfix]]></category>
		<category><![CDATA[smtp]]></category>
		<category><![CDATA[spam]]></category>
		<category><![CDATA[perl]]></category>
		<category><![CDATA[spf]]></category>

		<guid isPermaLink="false">http://www.kutukupret.com/?p=88</guid>
		<description><![CDATA[Even though spammers may not have thought to do the email forgery yet, I&#8217;m publishing SPF txt record in dns. I don&#8217;t even know whose gonna validate my spf record anyway But for the sake of my curiousity, i&#8217;m continue developing SPF on my ipv6 postfix smtp. first i need to publish spf txt record <a href='http://www.kutukupret.com/2009/08/08/postfix-ipv6-spf-sender-policy-framework/'>[...]</a>]]></description>
		<wfw:commentRss>http://www.kutukupret.com/2009/08/08/postfix-ipv6-spf-sender-policy-framework/feed/</wfw:commentRss>
		<slash:comments>5</slash:comments>
		</item>
		<item>
		<title>Howto make postfix listening on IPv6</title>
		<link>http://www.kutukupret.com/2009/08/05/howto-make-postfix-listening-on-ipv6/</link>
		<comments>http://www.kutukupret.com/2009/08/05/howto-make-postfix-listening-on-ipv6/#comments</comments>
		<pubDate>Wed, 05 Aug 2009 09:39:36 +0000</pubDate>
		<dc:creator>leenoux</dc:creator>
				<category><![CDATA[ipv6]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[postfix]]></category>
		<category><![CDATA[smtp]]></category>
		<category><![CDATA[mta]]></category>

		<guid isPermaLink="false">http://www.kutukupret.com/?p=84</guid>
		<description><![CDATA[Postfix, by default only listen on ipv4 interface. this is howto make Postfix listen on both ipv4/ipv6 This example using IPv6 address given by he.net In main.cf easy isn&#8217;t it? IPv6 is enabled out of the box in postfix, all you have to is little configuration tweak. Have a nice try]]></description>
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		<slash:comments>0</slash:comments>
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