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	<title>Cafe TI - pra perder o sono. &#187; Servidor de Email</title>
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		<title>Servidor Fedora com ADSL IP Fixo, DNS, Apache, Postfix</title>
		<link>http://cafe-ti.blog.br/31~servidor-fedora-com-adsl-ip-fixo-dns-apache-postfix.html</link>
		<comments>http://cafe-ti.blog.br/31~servidor-fedora-com-adsl-ip-fixo-dns-apache-postfix.html#comments</comments>
		<pubDate>Mon, 08 Oct 2007 16:15:37 +0000</pubDate>
		<dc:creator>Tetinha</dc:creator>
				<category><![CDATA[Apache]]></category>
		<category><![CDATA[DNS]]></category>
		<category><![CDATA[Fedora]]></category>
		<category><![CDATA[Internet]]></category>
		<category><![CDATA[Servidor de Email]]></category>

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		<description><![CDATA[Pessoal, Neste artigo, vou mostrar como configurar em um servidor Fedora o DNS, Postfix, Amavis-New, SpamAssassin e o Clamav funcionando em uma ADSL com IP Fixo no modem ou no pr&#243;prio servidor. O detalhe &#233; que vc n&#227;o precisar&#225; pagar para que seu dom&#237;nio, site da web e emails fiquem hospedados em provedor, pois j&#225; [...]


Sem artigos relacionados.]]></description>
			<content:encoded><![CDATA[<p>Pessoal,</p>
<p>Neste artigo, vou mostrar como configurar em um servidor Fedora o DNS, Postfix, Amavis-New, SpamAssassin e o Clamav funcionando em uma ADSL com IP Fixo no modem ou no pr&oacute;prio servidor. O detalhe &eacute; que vc n&atilde;o precisar&aacute; pagar para que seu dom&iacute;nio, site da web e emails fiquem hospedados em provedor, pois j&aacute; estar&atilde;o dentro do seu servidor. Sem levar em considera&ccedil;&atilde;o que geralmente a ADSL Fixa n&atilde;o precisa para a autentica&ccedil;&atilde;o para provedor, pois a autentica&ccedil;&atilde;o &eacute; feita na pr&oacute;pria operadora e j&aacute; esta inclu&iacute;do no preco da conex&atilde;o.</p>
<p>Primeiro vamos dividir em t&oacute;picos, apesar de eles trabalharem em conjunto:</p>
<p>1. DNS e arquivo hosts e resolv.conf; <br />
2. Apache;<br />
3. Postfix;</p>
<p>Considerando que vc j&aacute; tenha o servidor instalado com os devidos servi&ccedil;os, vou direto ao assunto:</p>
<p>
<strong>1. DNS e arquivos hosts e resolv.conf;</strong></p>
<p>Antes de qualquer coisa, vc precisa verificar se sua ADSL est&aacute; com o DNS REVERSO devidamente configurado na sua operadora. <br />
Para testar entre em : http://www.terra.com.br/postmaster/ e ponha o IP&nbsp; da sua ADSL Fixa para ver o resultado.<br />
Se o resultado for que a ADSL nao esta devidamente configurada&#8230;..vixi&#8230;eh bom se preparar pra passar um bom tempinho no telefone escultando a musiquinha e repitindo que vc quer configurar o DNS Reverso da ADSL de IP Fixo para os atendentes.</p>
<p>Na fapesp sao necess&aacute;rio pelo menos 2 IP de servidores de DNS para hospedagem de um dom&iacute;nio e como somente temos 1 IP vamos precisar utililzar um servi&ccedil;o de servidores de DNS como SuperDNS, cujo explicarei mais tarde como faremos isso.</p>
<p>Bom comecemos com os arquivos de configura&ccedil;&atilde;o entao.</p>
<p><u>Hosts</u></p>
<p>edite o arquivo /etc/hosts e deixe-o assim: <font size="2" face="Courier"></p>
<table width="470" height="184" cellspacing="0" cellpadding="" bordercolor="#f5f5f5" border="1" bgcolor="#e8ffff">
<tbody>
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<td>
<p># Localhost<br />
            127.0.0.1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; localhost.localdomain&nbsp;&nbsp; localhost</p>
<p>            #IP Interno<br />
            192.168.0.1&nbsp;&nbsp;&nbsp;&nbsp; seuhost.seudominio.com.br&nbsp; seuhost<br />
            192.168.0.1&nbsp;&nbsp;&nbsp;&nbsp; mail.seudominio.com.br&nbsp;&nbsp; &nbsp; mail</p>
<p># IP Externo<br />
            200.xxx.xxx.xxx &nbsp;&nbsp;&nbsp; seuhost.seudominio.com.br&nbsp; seuhost<br />
            200.xxx.xxx.xxx &nbsp;&nbsp;&nbsp; mail.seudominio.com.br&nbsp;&nbsp;&nbsp;&nbsp; mail</p>
</td>
</tr>
</tbody>
</table>
<p></font></p>
<p><u>Resolv.conf</u></p>
<p>Esse arquivo &eacute; respons&aacute;vel pela indica&ccedil;&atilde;o de onde o servidor ir&aacute; pesquisar o DNS. Edite o /etc/resolv.conf e deixe-o assim:&nbsp; <font size="2" face="Courier"></p>
<table width="470" height="74" cellspacing="0" cellpadding="" bordercolor="#f5f5f5" border="1" bgcolor="#e8ffff">
<tbody>
<tr>
<td>
            nameserver 200.xxx.xxx.xx1 ## servidor DNS primario da sua operadora<br />
            nameserver 200.xxx.xxx.xx2 ## servidor DNS secundario da sua operadora<br />
            nameserver 192.168.xxx.xxx ## servidor DNS local, IP do seu servidor</td>
</tr>
</tbody>
</table>
<p></font> <br />
Se o IP Fixo estiver no seu modem, ent&atilde;o ser&aacute; necess&aacute;rio editar o arquivo /sbin/dhclient-script e comentar algumas linhas na funcao make_resolv_conf(), deixando-a assim: <font size="2" face="Courier"></p>
<table width="470" height="74" cellspacing="0" cellpadding="" bordercolor="#f5f5f5" border="1" bgcolor="#e8ffff">
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<td>
<p>
            make_resolv_conf() {<br />
            &nbsp; if [ &quot;${PEERDNS}&quot; == &quot;no&quot; ]; then<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return<br />
            &nbsp; fi</p>
<p>            #&nbsp; if [ x$reason == xRENEW ] &amp;&amp;<br />
            # &nbsp;&nbsp;&nbsp; [ &quot;$new_domain_name&quot; == &quot;$old_domain_name&quot; ] &amp;&amp;<br />
            # &nbsp;&nbsp;&nbsp; [ &quot;$new_domain_name_servers&quot; == &quot;$old_domain_name_servers&quot; ]; then<br />
            # &nbsp;&nbsp;&nbsp;&nbsp; return;<br />
            #&nbsp; fi</p>
<p>            #&nbsp; if [ -n &quot;$new_domain_name&quot; ] || [ -n &quot;$new_domain_name_servers&quot; ]; then<br />
            #&nbsp;&nbsp; &nbsp; cp -fp /etc/resolv.conf /etc/resolv.conf.predhclient<br />
            # &nbsp;&nbsp; rscf=`mktemp /tmp/XXXXXX`;<br />
            # &nbsp;&nbsp; echo &#8216;; generated by /sbin/dhclient-script&#8217; &gt; $rscf<br />
            # &nbsp;&nbsp; if [ -n &quot;$SEARCH&quot; ]; then<br />
            # &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; echo search $SEARCH &gt;&gt; $rscf<br />
            # &nbsp;&nbsp; else<br />
            # &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if [ -n &quot;$new_domain_name&quot; ]; then<br />
            # &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; echo search $new_domain_name &gt;&gt; $rscf<br />
            # &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; fi<br />
            # &nbsp;&nbsp; fi<br />
            # &nbsp;&nbsp; for nameserver in $new_domain_name_servers; do<br />
            # &nbsp;&nbsp;&nbsp; echo nameserver $nameserver &gt;&gt; $rscf<br />
            #&nbsp;&nbsp;&nbsp; done<br />
            # &nbsp;&nbsp; change_resolv_conf $rscf<br />
            # &nbsp;&nbsp; rm -f $rscf<br />
            #&nbsp; fi<br />
            }</p>
</td>
</tr>
</tbody>
</table>
<p></font></p>
<p>Pronto, agora o script n&atilde;o ir&aacute; alterar o seu arquivo resolv.conf cada ver que vc reiniciar a rede ou o servidor.</p>
<p>Vamos ao DNS ent&atilde;o.</p>
<p><u>DNS</u></p>
<p>No Fedora, como utililza o chroot para o DNS, no /etc/ fica somente um link simb&oacute;lico para a pasta &quot;/var/named/chroot/&quot;, o seu chroot, e seus arquivos de configura&ccedil;&otilde;es nas subpastas &quot;../etc/&quot; e &quot;../var/named/&quot;.</p>
<p>&nbsp;Vamos editar primeiro o arquivo named.conf que esta no etc do chkroot.<br />
Aqui fica as especifica&ccedil;&otilde;es das zonas de dominios, subdom&iacute;nios, dom&iacute;nios reversos&nbsp; que o seu DNS ir&aacute; resolver</p>
<p><font size="2" face="Courier"></p>
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<tbody>
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<td>
<p>
            # opcoes de carregamento do bind<br />
            options {<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; directory &quot;/etc&quot;;<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; pid-file &quot;/var/run/named/named.pid&quot;;<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; };</p>
<p>            # zona do base de dados do cache do Bind<br />
            zone &quot;.&quot; {<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; type hint;<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; file &quot;/etc/db.cache&quot;;<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; };</p>
<p># zona direta (aqui vc coloca o seu cominio direto)<br />
            zone &quot;seudominio.com.br&quot; {<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; type master; # tipo de registro<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; file &quot;/var/named/seudominio.com.br.hosts&quot;; # arq de configuracao do dominio<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; };</p>
<p># zona reversa<br />
            zone &quot;1.0.168.192.in-addr.arpa&quot; {&nbsp; # descricao reversa do IP interno<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; type master;<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; file &quot;/var/named/192.168.0.1.rev&quot;;<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; };<br />
            zone &quot;101.24.64.200.in-addr.arpa&quot; { # descricao reversa do IP externo<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; type master;<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; file &quot;/var/named/200.64.24.101.rev&quot;;<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; };</p>
</td>
</tr>
</tbody>
</table>
<p></font></p>
<p>Na zona reversa tem ter os IP Internos e Externos, como mostro na configura&ccedil;&atilde;o acima.</p>
<p>&nbsp;Agora vamos aos arquivos de configuracao&nbsp; de cada zona no diretorio ../var/named/:</p>
<p>Primeiro editamos o seudominio.com.br.hosts:</p>
<p><font size="2" face="Courier"></p>
<table width="472" height="216" cellspacing="0" cellpadding="" bordercolor="#f5f5f5" border="1" bgcolor="#e8ffff">
<tbody>
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<p>
            $ttl 38400<br />
            seudominio.com.br. IN&nbsp;&nbsp;&nbsp; SOA&nbsp;&nbsp; seuhost.seudominio.com.br. root.seudominio.com.br. (<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1186865834<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 10800<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3600<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 604800<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 38400 )<br />
            seudominio.com.br. IN&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; NS&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; seuhost.seudominio.com.com.br.<br />
            seudominio.com.br. IN&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; A&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 192.168.0.1<br />
            seudominio.com.br. IN&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; A&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 200.64.24.101<br />
            mail.seudominio.com.br.&nbsp;&nbsp;&nbsp; IN&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; MX&nbsp;&nbsp; 5&nbsp;              seudominio.com.br<br />
            www.seudominio.com.br.&nbsp;&nbsp;&nbsp;&nbsp; IN&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; CNAME&nbsp;&nbsp;             seudominio.com.br.</p>
</td>
</tr>
</tbody>
</table>
<p></font></p>
<p>&nbsp;Tomem cuidado para n&atilde;o esquecer dos &quot;.&quot; que existem no final da descri&ccedil;&atilde;o dos dom&iacute;nios em alguns paramentros da configura&ccedil;&atilde;o.</p>
<p>Agora os DNS reversos:</p>
<p>Editemos o 192.168.0.1.rev, o IP Interno:</p>
<p><font size="2" face="Courier"></p>
<table width="470" height="184" cellspacing="0" cellpadding="" bordercolor="#f5f5f5" border="1" bgcolor="#e8ffff">
<tbody>
<tr>
<td>$ttl 38400<br />
            1.0.168.192.in-addr.arpa.&nbsp;&nbsp; IN&nbsp;&nbsp; SOA&nbsp;&nbsp; seuhost.seudominio.com.br. root.seudominio.com.br. (<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1186865977<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 10800<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3600<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 604800<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 38400 )<br />
            1.0.168.192.in-addr.arpa.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; IN&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; NS&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; seuhost.seudominio.com.br.<br />
            1.0.168.192.in-addr.arpa.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; IN&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; PTR&nbsp;&nbsp;&nbsp;&nbsp; seudominio.com.br.</td>
</tr>
</tbody>
</table>
<p></font></p>
<p>&nbsp;Agora o Editemos o 200.64.24.101.rev, o IP Interno:</p>
<p><font size="2" face="Courier"></p>
<table width="470" height="184" cellspacing="0" cellpadding="" bordercolor="#f5f5f5" border="1" bgcolor="#e8ffff">
<tbody>
<tr>
<td>$ttl 38400<br />
            101.24.64.200.in-addr.arpa.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; IN&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; SOA&nbsp;&nbsp;&nbsp;&nbsp; seuhost.seudominio.com.br. root.seudominio.com.br.(<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1189608459<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 10800<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3600<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 604800<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 38400 )<br />
            101.24.64.200.in-addr.arpa.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; IN&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; NS&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; seuhost.seudominio.com.br.<br />
            101.24.64.200.in-addr.arpa.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; IN&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; PTR&nbsp;&nbsp;&nbsp;&nbsp; seudominio.com.br.</td>
</tr>
</tbody>
</table>
<p></font></p>
<p>&nbsp;Pronto, agora &eacute; so reiniciar o named.</p>
<p>
<strong>2.Apache</strong></p>
<p>Vamos configurar o Apache para ele resolver a p&aacute;gina com o dom&iacute;nio.</p>
<p>&nbsp;editem o arquivo /etc/httpd/conf/http.conf e deixem as linhas abaixo assim:</p>
<p><font size="2" face="Courier"></p>
<table width="470" height="132" cellspacing="0" cellpadding="" bordercolor="#f5f5f5" border="1" bgcolor="#e8ffff">
<tbody>
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<td>
<p>ServerAdmin root@seudominio.com.br</p>
<p>ServerName seuhost.seudominio.com.br:80</p>
<p>            ServerSignature Off</p>
<p>            NameVirtualHost *:80</p>
</td>
</tr>
</tbody>
</table>
<p></font></p>
<p>Como o apache tem um include no diretorio /etc/httpd/conf.d, crie um aquivo para as configura&ccedil;&otilde;es do dominio seudominio.conf nesta pasta:</p>
<p><font size="2" face="Courier"></p>
<table width="470" height="184" cellspacing="0" cellpadding="" bordercolor="#f5f5f5" border="1" bgcolor="#e8ffff">
<tbody>
<tr>
<td>
<p>&lt;VirtualHost *:80&gt;</p>
<p>            DocumentRoot &quot;/var/www/html&quot;&nbsp;&nbsp;&nbsp;&nbsp; # especifique o diretorio onde vc  ira colocar a pagina</p>
<p>            ServerName seudominio.com.br&nbsp; # o seu dominio que ira ser respondido pelo DNS</p>
<p>            &lt;Directory &quot;/var/www/html&quot;&gt; # opcoes do diretorio<br />
            allow from all<br />
            Options +Indexes<br />
            &lt;/Directory&gt;</p>
<p>            &lt;/VirtualHost&gt;</p>
</td>
</tr>
</tbody>
</table>
<p></font></p>
<p>&nbsp;agora reinicie o Apache.</p>
<p>&nbsp;</p>
<p><strong>3. Postfix</strong></p>
<p>Vamos&nbsp; editar o postfix&nbsp; para funcionar com o seu dominio.</p>
<p>Edite&nbsp; o arquivo main.cf no diretorio /etc/postfix e altere as linhas:</p>
<p><font size="2" face="Courier"></p>
<table width="470" height="184" cellspacing="0" cellpadding="" bordercolor="#f5f5f5" border="1" bgcolor="#e8ffff">
<tbody>
<tr>
<td>myhostname = mail.seudominio.com.br</p>
<p>            mydomain = seudominio.com.br</p>
<p>            myorigin = $mydomain</p>
<p>            inet_interfaces = all</p>
<p>            mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain, mail.$mydomain</p>
<p>            mynetworks = 127.0.0.0/8, 192.168.0.0/24, 200.64.24.101/30</p>
<p>            relay_domains = $mydestination</p>
<p>            smtpd_banner = $myhostname ESMTP $mail_name</p>
<p>            # adicione estas linhas no final do arquivo:</p>
<p>            strict_rfc821_envelopes = yes</p>
<p>            disable_vrfy_command = yes</p>
<p>            smtpd_etrn_restrictions = permit_mynetworks, <br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; reject<br />
            smtpd_helo_required = yes</p>
<p>            smtpd_recipient_restrictions = permit_mynetworks,<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; reject_unauth_destination<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; reject_non_fqdn_sender<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; reject_non_fqdn_recipient<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; reject_unknown_sender_domain<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; reject_unknown_recipient_domain<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; reject_invalid_hostname<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; reject_non_fqdn_hostname<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; reject_rbl_client bl.spamcop.net<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; reject_rbl_client sbl-xbl.spamhaus.org<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; reject_rbl_client list.dsbl.org<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; reject_rbl_client sbl.spamhaus.org<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; reject_rbl_client cbl.abuseat.org<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; reject_rbl_client dul.dnsbl.sorbs.net<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; reject_rbl_client rbl.brasilrbl.com.br<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; reject_rhsbl_client rhsbl.brasilrbl.com.br,<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; reject_unknown_sender_domain,<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; reject_unauth_destination,<br />
            &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; permit</td>
</tr>
</tbody>
</table>
<p></font></p>
<p>&nbsp;Pronto, reinicie o postfix.</p>
<p>Galera, ainda tenho algumas outras implementa&ccedil;&otilde;es mas vai ficar pra outra materia.<br />
Fique de olho nos logs, pois as vezes a faixa de IP da sua ADSL pode estar em alguma lista de Spam, dai vc ira precisar retirala de la<br />
Cada lista tem um metodo diferente.</p>
<p>Pra finalizarmos vamos ao SuperDNS.<br />
Entre na p&aacute;gina de cadastrem-se: <a target="_blank" href="http://www.superdns.com.br">www.superdns.com.br</a><br />
Para 1 credito o cadastro &eacute; gratuito, mas dependendo da configura&ccedil;&atilde;o que vc fizer no dominio ira aparecer um banner dos patrocinadores.</p>
<p>Entao para que isso n&atilde;o ocorra configure assim:</p>
<table width="427" height="134" cellspacing="1" cellpadding="0" border="1">
<tbody>
<tr>
<td><font size="2" face="verdana">Host</font></td>
<td>-</td>
<td>Endrece&ccedil;o</td>
</tr>
<tr>
<td valign="top">*</td>
<td valign="top">A</td>
<td valign="top">200.64.24.101</td>
</tr>
<tr>
<td valign="top">@</td>
<td valign="top">A</td>
<td valign="top">200.64.24.101</td>
</tr>
<tr>
<td valign="top">@</td>
<td valign="top">TXT</td>
<td valign="top"><font size="2" face="verdana">v=spf1 ip4:</font>200.64.24.101<font size="2" face="verdana"> ~all</font></td>
</tr>
<tr>
<td valign="top">@</td>
<td valign="top"><font size="2" face="verdana">MX 5</font></td>
<td valign="top">mail.seudominio.com.br</td>
</tr>
<tr>
<td valign="top"><font size="2" face="verdana"> 	101.24.64.200.in-addr.arpa <br />
            </font></td>
<td valign="top">PTR</td>
<td valign="top">seudominio.com.br</td>
</tr>
<tr>
<td valign="top"><font size="2" face="verdana"> 	101.24.64.200.in-addr.arpa</font></td>
<td valign="top">PTR</td>
<td valign="top">mail.seudominio.com.br</td>
</tr>
</tbody>
</table>
<p>A atualiza&ccedil;&atilde;oo demora um pouco,</p>
<p>depois teste tudo para ver se ficou certinho. Aqui tem um site que pode ajudar muito:<br />
<a target="_blank" href="http://www.dnsstuff.com">www.dnsstuff.com</a></p>
<p>&nbsp;</p>
<p>Abra&ccedil;os a todos, fui..!!!</p>
<p>&nbsp;</p>
<p>Cristiano Perrenoud Resende<br />
(Tetinha)</p>
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