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	<title>KutuKupret &#187; linux</title>
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	<link>http://www.kutukupret.com</link>
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		<title>Postfix Changing Outgoing IP By Time Interval Using TCP_TABLE And Perl</title>
		<link>http://www.kutukupret.com/2011/11/15/postfix-changing-outgoing-ip-by-time-interval-using-tcp_table-and-perl/</link>
		<comments>http://www.kutukupret.com/2011/11/15/postfix-changing-outgoing-ip-by-time-interval-using-tcp_table-and-perl/#comments</comments>
		<pubDate>Tue, 15 Nov 2011 09:00:44 +0000</pubDate>
		<dc:creator>leenoux</dc:creator>
				<category><![CDATA[email]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[modules]]></category>
		<category><![CDATA[perl]]></category>
		<category><![CDATA[pop3]]></category>
		<category><![CDATA[postfix]]></category>
		<category><![CDATA[programming]]></category>
		<category><![CDATA[sendmail]]></category>
		<category><![CDATA[smtp]]></category>
		<category><![CDATA[ip address]]></category>
		<category><![CDATA[randomize]]></category>
		<category><![CDATA[rotate]]></category>
		<category><![CDATA[sequence]]></category>
		<category><![CDATA[serialize]]></category>
		<category><![CDATA[storable]]></category>

		<guid isPermaLink="false">http://www.kutukupret.com/?p=1536</guid>
		<description><![CDATA[Someone asked me if i can make a perl scripts that can change the ip address based on time interval, say he want ip address 1.2.3.4 used within one hour, if done next ip address will be used within next one hour..and so on. when it came to highest number of ip address in array, <a href='http://www.kutukupret.com/2011/11/15/postfix-changing-outgoing-ip-by-time-interval-using-tcp_table-and-perl/'>[...]</a>]]></description>
		<wfw:commentRss>http://www.kutukupret.com/2011/11/15/postfix-changing-outgoing-ip-by-time-interval-using-tcp_table-and-perl/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Geo Location DNSBL Using Perl, Memcached And GeoIP</title>
		<link>http://www.kutukupret.com/2011/07/28/geo-location-dnsbl-using-perl-memcached-and-geoip/</link>
		<comments>http://www.kutukupret.com/2011/07/28/geo-location-dnsbl-using-perl-memcached-and-geoip/#comments</comments>
		<pubDate>Thu, 28 Jul 2011 07:17:14 +0000</pubDate>
		<dc:creator>leenoux</dc:creator>
				<category><![CDATA[bind9]]></category>
		<category><![CDATA[database]]></category>
		<category><![CDATA[dns]]></category>
		<category><![CDATA[dnsbl]]></category>
		<category><![CDATA[email]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[memcached]]></category>
		<category><![CDATA[memory]]></category>
		<category><![CDATA[perl]]></category>
		<category><![CDATA[postfix]]></category>
		<category><![CDATA[programming]]></category>
		<category><![CDATA[smtp]]></category>
		<category><![CDATA[geo location]]></category>
		<category><![CDATA[geoip]]></category>
		<category><![CDATA[memcache]]></category>
		<category><![CDATA[nameserver]]></category>
		<category><![CDATA[rbl]]></category>
		<category><![CDATA[ube]]></category>
		<category><![CDATA[uce]]></category>

		<guid isPermaLink="false">http://www.kutukupret.com/?p=1491</guid>
		<description><![CDATA[In my last article about the DNSBL and memcached, I wrote how to use memcached to store the data for the DNSBL. It led me to other new ideas to make the Geo Location DNSBL. In previous article I put data into memcached with the following format: Example: Each ip address has a pair of <a href='http://www.kutukupret.com/2011/07/28/geo-location-dnsbl-using-perl-memcached-and-geoip/'>[...]</a>]]></description>
		<wfw:commentRss>http://www.kutukupret.com/2011/07/28/geo-location-dnsbl-using-perl-memcached-and-geoip/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>DNSBL Using Perl And Memcached</title>
		<link>http://www.kutukupret.com/2011/07/27/dnsbl-using-perl-and-memcached/</link>
		<comments>http://www.kutukupret.com/2011/07/27/dnsbl-using-perl-and-memcached/#comments</comments>
		<pubDate>Wed, 27 Jul 2011 12:44:59 +0000</pubDate>
		<dc:creator>leenoux</dc:creator>
				<category><![CDATA[bash]]></category>
		<category><![CDATA[dns]]></category>
		<category><![CDATA[dnsbl]]></category>
		<category><![CDATA[email]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[memory]]></category>
		<category><![CDATA[perl]]></category>
		<category><![CDATA[smtp]]></category>
		<category><![CDATA[spam]]></category>
		<category><![CDATA[memcache]]></category>
		<category><![CDATA[nameserver]]></category>
		<category><![CDATA[rbl]]></category>
		<category><![CDATA[ube]]></category>
		<category><![CDATA[uce]]></category>

		<guid isPermaLink="false">http://www.kutukupret.com/?p=1486</guid>
		<description><![CDATA[DNSBL is a DNS based blackhole list, which can be used as countermeasure against unsolicited mail spam. One of the most efficient ways to block mail spam is to do it on SMTP conversation stage by denying incoming connects from spam sources, where the source machine is identified by its IP address which is checked <a href='http://www.kutukupret.com/2011/07/27/dnsbl-using-perl-and-memcached/'>[...]</a>]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>postfix, integrating memcache as a lookup table using tcp_table</title>
		<link>http://www.kutukupret.com/2011/07/20/postfix-integrating-memcache-as-a-lookup-table-using-tcp_table/</link>
		<comments>http://www.kutukupret.com/2011/07/20/postfix-integrating-memcache-as-a-lookup-table-using-tcp_table/#comments</comments>
		<pubDate>Wed, 20 Jul 2011 14:16:51 +0000</pubDate>
		<dc:creator>leenoux</dc:creator>
				<category><![CDATA[email]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[memcached]]></category>
		<category><![CDATA[modules]]></category>
		<category><![CDATA[perl]]></category>
		<category><![CDATA[postfix]]></category>
		<category><![CDATA[smtp]]></category>
		<category><![CDATA[Cache::Memcached]]></category>
		<category><![CDATA[check_recipient_access]]></category>
		<category><![CDATA[mta]]></category>
		<category><![CDATA[script]]></category>
		<category><![CDATA[smtpd_recipient_restrictions]]></category>
		<category><![CDATA[tcp_table]]></category>

		<guid isPermaLink="false">http://www.kutukupret.com/?p=1478</guid>
		<description><![CDATA[I have not had time to do the test &#8220;postfix memcached patch&#8221; because there are no idle servers that can be used for the experiment. instead, I&#8217;ve made a tutorial how to integrate memcached as a &#8220;postfix lookup table&#8221; with the help of tcp_table and a simple perl script. Indeed, tcp_table &#8220;table lookup protocol&#8221; is <a href='http://www.kutukupret.com/2011/07/20/postfix-integrating-memcache-as-a-lookup-table-using-tcp_table/'>[...]</a>]]></description>
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		<slash:comments>4</slash:comments>
		</item>
		<item>
		<title>Postfix, Dynamic OverQuota User Map Script Using Bash And Inotifywait</title>
		<link>http://www.kutukupret.com/2011/07/14/postfix-dynamic-overquota-user-map-script-using-bash-and-inotifywait/</link>
		<comments>http://www.kutukupret.com/2011/07/14/postfix-dynamic-overquota-user-map-script-using-bash-and-inotifywait/#comments</comments>
		<pubDate>Thu, 14 Jul 2011 13:47:59 +0000</pubDate>
		<dc:creator>leenoux</dc:creator>
				<category><![CDATA[bash]]></category>
		<category><![CDATA[database]]></category>
		<category><![CDATA[email]]></category>
		<category><![CDATA[kernel]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[mysql]]></category>
		<category><![CDATA[postfix]]></category>
		<category><![CDATA[smtp]]></category>
		<category><![CDATA[check_recipient_access]]></category>
		<category><![CDATA[inotify-tools]]></category>
		<category><![CDATA[inotifywait]]></category>
		<category><![CDATA[maildir]]></category>
		<category><![CDATA[quota]]></category>
		<category><![CDATA[script]]></category>
		<category><![CDATA[smtpd_recipient_restrictions]]></category>

		<guid isPermaLink="false">http://www.kutukupret.com/?p=1450</guid>
		<description><![CDATA[I recently experimented with a simple bash script, inotifywait and  smtpd_recipient_restrictions (check_recipient_access) to map email users who have exceeded the quota. Well, during testing, i&#8217;ve noticed when using hash/texthash lookup tables, it needed to be reloaded in order smtpd detect changes in table.so i&#8217;ve made quick test on mysql_tables it seem updating record on tables will <a href='http://www.kutukupret.com/2011/07/14/postfix-dynamic-overquota-user-map-script-using-bash-and-inotifywait/'>[...]</a>]]></description>
		<wfw:commentRss>http://www.kutukupret.com/2011/07/14/postfix-dynamic-overquota-user-map-script-using-bash-and-inotifywait/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Postfix, Realtime Maildir Replication Using Dual-primary DRBD with OCFS2</title>
		<link>http://www.kutukupret.com/2011/06/19/postfix-realtime-maildir-replication-using-dual-primary-drbd-with-ocfs2/</link>
		<comments>http://www.kutukupret.com/2011/06/19/postfix-realtime-maildir-replication-using-dual-primary-drbd-with-ocfs2/#comments</comments>
		<pubDate>Sun, 19 Jun 2011 05:56:59 +0000</pubDate>
		<dc:creator>leenoux</dc:creator>
				<category><![CDATA[email]]></category>
		<category><![CDATA[kernel]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[load balance]]></category>
		<category><![CDATA[modules]]></category>
		<category><![CDATA[postfix]]></category>
		<category><![CDATA[redhat]]></category>
		<category><![CDATA[smtp]]></category>
		<category><![CDATA[drbd]]></category>
		<category><![CDATA[filesystem]]></category>
		<category><![CDATA[High Availability]]></category>
		<category><![CDATA[maildir]]></category>
		<category><![CDATA[ocfs2]]></category>
		<category><![CDATA[replication]]></category>
		<category><![CDATA[rpm]]></category>

		<guid isPermaLink="false">http://www.kutukupret.com/?p=1361</guid>
		<description><![CDATA[As I&#8217;ve been written on my previous post about Maildir Replication using ChironFS in postfix, I will explain step by step it can also be done by using drbd and ocfs2. Compiling &#38; Installing note: if your Linux distribution is shipped with a kernel older than 2.6.33 you have to install a kernel module package <a href='http://www.kutukupret.com/2011/06/19/postfix-realtime-maildir-replication-using-dual-primary-drbd-with-ocfs2/'>[...]</a>]]></description>
		<wfw:commentRss>http://www.kutukupret.com/2011/06/19/postfix-realtime-maildir-replication-using-dual-primary-drbd-with-ocfs2/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Postfix, Maildir Replication In Real Time Using ChironFS</title>
		<link>http://www.kutukupret.com/2011/06/14/postfix-maildir-replication-in-real-time-using-chironfs/</link>
		<comments>http://www.kutukupret.com/2011/06/14/postfix-maildir-replication-in-real-time-using-chironfs/#comments</comments>
		<pubDate>Tue, 14 Jun 2011 09:25:50 +0000</pubDate>
		<dc:creator>leenoux</dc:creator>
				<category><![CDATA[email]]></category>
		<category><![CDATA[kernel]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[modules]]></category>
		<category><![CDATA[pop3]]></category>
		<category><![CDATA[postfix]]></category>
		<category><![CDATA[ChironFS]]></category>
		<category><![CDATA[ext3]]></category>
		<category><![CDATA[filesystem]]></category>
		<category><![CDATA[fstab]]></category>
		<category><![CDATA[fuse]]></category>
		<category><![CDATA[kernel module]]></category>
		<category><![CDATA[nfs]]></category>
		<category><![CDATA[sshfs]]></category>

		<guid isPermaLink="false">http://www.kutukupret.com/?p=1346</guid>
		<description><![CDATA[In this tutorial I will describe how to set up postfix and maildir which can automatically replicate email when email is delivered. We will not touch the postfix configuration at all. we will manipulate maildir directory behavior using ChironFS, instead. what is ChironFS? This the Chiron Filesystem. It is a Fuse based filesystem. It&#8217;s main purpose <a href='http://www.kutukupret.com/2011/06/14/postfix-maildir-replication-in-real-time-using-chironfs/'>[...]</a>]]></description>
		<wfw:commentRss>http://www.kutukupret.com/2011/06/14/postfix-maildir-replication-in-real-time-using-chironfs/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Memcached Replication On Server Clusters</title>
		<link>http://www.kutukupret.com/2011/06/14/memcached-replication-on-server-clusters/</link>
		<comments>http://www.kutukupret.com/2011/06/14/memcached-replication-on-server-clusters/#comments</comments>
		<pubDate>Tue, 14 Jun 2011 02:01:06 +0000</pubDate>
		<dc:creator>leenoux</dc:creator>
				<category><![CDATA[apache]]></category>
		<category><![CDATA[database]]></category>
		<category><![CDATA[http]]></category>
		<category><![CDATA[https]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[load balance]]></category>
		<category><![CDATA[memcached]]></category>
		<category><![CDATA[memory]]></category>
		<category><![CDATA[modules]]></category>
		<category><![CDATA[mysql]]></category>
		<category><![CDATA[patch]]></category>
		<category><![CDATA[php]]></category>
		<category><![CDATA[programming]]></category>
		<category><![CDATA[High Availability]]></category>
		<category><![CDATA[memcached-repcached]]></category>
		<category><![CDATA[PECL]]></category>
		<category><![CDATA[repcached]]></category>

		<guid isPermaLink="false">http://www.kutukupret.com/?p=1341</guid>
		<description><![CDATA[When I was looking for ways to replicate the contents of memcached for high-availability performance, I found this memcached-repcached application. that has the ability to replicate the contents of one memcached to another. Repcached key features Multi master replication. Asynchronous data repliacation. Support all memcached command (set, add, delete, incr/decr, flush_all, cas) People probably already <a href='http://www.kutukupret.com/2011/06/14/memcached-replication-on-server-clusters/'>[...]</a>]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Measure Response Time Of SMTP Connections Using Perl</title>
		<link>http://www.kutukupret.com/2011/06/10/measure-response-time-of-smtp-connections-using-perl/</link>
		<comments>http://www.kutukupret.com/2011/06/10/measure-response-time-of-smtp-connections-using-perl/#comments</comments>
		<pubDate>Fri, 10 Jun 2011 01:14:37 +0000</pubDate>
		<dc:creator>leenoux</dc:creator>
				<category><![CDATA[email]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[modules]]></category>
		<category><![CDATA[perl]]></category>
		<category><![CDATA[postfix]]></category>
		<category><![CDATA[smtp]]></category>
		<category><![CDATA[esmtp]]></category>
		<category><![CDATA[Net::SMTP]]></category>
		<category><![CDATA[port 25]]></category>
		<category><![CDATA[script]]></category>
		<category><![CDATA[telnet]]></category>
		<category><![CDATA[Time::HiRes]]></category>

		<guid isPermaLink="false">http://www.kutukupret.com/?p=1302</guid>
		<description><![CDATA[Normally, to check if my server smtp connection alive, I just do telnet to port 25 from my workstation. if the smtp banner displayed, it means that the connection to the smtp server is good. I have done this for years.  Although many tools that are deliberately created for this purpose, still, I prefer just <a href='http://www.kutukupret.com/2011/06/10/measure-response-time-of-smtp-connections-using-perl/'>[...]</a>]]></description>
		<wfw:commentRss>http://www.kutukupret.com/2011/06/10/measure-response-time-of-smtp-connections-using-perl/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Memcached In A shell Using nc And echo</title>
		<link>http://www.kutukupret.com/2011/05/05/memcached-in-a-shell-using-nc-and-echo/</link>
		<comments>http://www.kutukupret.com/2011/05/05/memcached-in-a-shell-using-nc-and-echo/#comments</comments>
		<pubDate>Thu, 05 May 2011 03:33:32 +0000</pubDate>
		<dc:creator>leenoux</dc:creator>
				<category><![CDATA[bash]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[memcached]]></category>
		<category><![CDATA[memory]]></category>
		<category><![CDATA[echo]]></category>
		<category><![CDATA[memcache]]></category>
		<category><![CDATA[nc]]></category>
		<category><![CDATA[shell]]></category>

		<guid isPermaLink="false">http://www.kutukupret.com/?p=1072</guid>
		<description><![CDATA[Some example accessing memcached from a shell using nc and echo Storage Commands Parameters : Server return : &#8211; &#8211; &#8211; &#8211; &#8211; &#8211; &#8211; &#8211; &#8211; &#8211;]]></description>
		<wfw:commentRss>http://www.kutukupret.com/2011/05/05/memcached-in-a-shell-using-nc-and-echo/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
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