Difference between revisions of "Instalation Null Client in Debian"

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Back to [[Mail server]]
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__NOTOC__
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<div class="thumbnail img-thumbnail">http://wiki.sc3.uis.edu.co/images/a/a8/Logo_sc33.png</div>
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<p><div class="btn btn-primary"><i class="fa  fa-long-arrow-left"></i> [[Mail server]]</div></p>
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<div class="col-md-14">
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    <div class="panel panel-darker-white-border">
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        <div class="panel-heading">
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            <h3 class="panel-title">Instalation Null Client in Debian</h3>
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        </div>
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        <div class="panel-body">
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            <p><b>Sendmail Null Client (Debian)</b></p>
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            <p>
  
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'''Sendmail Null Client (Debian)'''
 
 
== Installation ==
 
== Installation ==
 
{{Command|<nowiki>aptitude install sendmail</nowiki>}}
 
{{Command|<nowiki>aptitude install sendmail</nowiki>}}
 
== Setting-up ==
 
== Setting-up ==
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Replace ${ADMIN_EMAIL}, ${HOSTNAME}, ${DNS_DOMAIN}, ${IP_ADDR} for the adequate values.
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1. Replace ${ADMIN_EMAIL}, ${HOSTNAME}, ${DNS_DOMAIN}, ${IP_ADDR} for the adequate values.
  
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Redirect messages from root, postmaster, admin, etc, to the administrator.
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2. Redirect messages from root, postmaster, admin, etc, to the administrator.
  
 
Edit /etc/mail/aliases
 
Edit /etc/mail/aliases
Line 19: Line 30:
 
Update the aliases database:
 
Update the aliases database:
 
{{Command|<nowiki>/usr/sbin/newaliases</nowiki>}}
 
{{Command|<nowiki>/usr/sbin/newaliases</nowiki>}}
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Verify that sendmail knows about the different names that the client can have.
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4. Verify that sendmail knows about the different names that the client can have.
  
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Editar /etc/mail/local-host-names
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Edit /etc/mail/local-host-names
 
{{File|/etc/mail/local-host-names|<pre><nowiki>
 
{{File|/etc/mail/local-host-names|<pre><nowiki>
 
...
 
...
Line 30: Line 41:
 
...
 
...
 
</pre></nowiki>}}
 
</pre></nowiki>}}
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Verificar que el host aparece en /etc/hosts
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Verify that the host appears in /etc/hosts
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{{File|/etc/hosts|<pre><nowiki>
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${IP_ADDR}  ${HOSTNAME}.${DNS_DOMAIN}  ${HOSTNAME}
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...
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${IP_ADDR}  ${HOSTNAME}.${DNS_DOMAIN}  ${HOSTNAME}
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Editar /etc/mail/sendmail.mc
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...</nowiki></pre>}}
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Edit /etc/mail/sendmail.mc
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(...)
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{{File|/etc/mail/sendmail.mc|<pre><nowiki>
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dnl #
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...
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dnl # Masquerading options
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dnl #
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FEATURE(`always_add_domain')dnl
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dnl # Masquerading options
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MASQUERADE_AS(`${HOSTNAME}.${DNS_DOMAIN}')dnl
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FEATURE(`always_add_domain')dnl
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FEATURE(`allmasquerade')dnl
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MASQUERADE_AS(`${HOSTNAME}.${DNS_DOMAIN}')dnl
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FEATURE(`masquerade_envelope')dnl
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FEATURE(`allmasquerade')dnl
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dnl #
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FEATURE(`masquerade_envelope')dnl
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dnl # Default Mailer setup
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dnl #
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MAILER_DEFINITIONS
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dnl # Default Mailer setup
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MAILER(`local')dnl
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MAILER_DEFINITIONS
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MAILER(`smtp')dnl
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MAILER(`local')dnl
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MAILER(`smtp')dnl
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Activar la nueva configuración
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...</nowiki></pre>}}
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5. Activate the new configuration
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yes | sendmailconfig
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{{Command|<nowiki>yes | sendmailconfig</nowiki>}}
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== Security ==
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== Seguridad ==
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By default Debian installs sendmail enabled only for localhost.<br>
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Por omisi&oacute;n Debian instala sendmail habilitado solo para localhost<br>
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If tcp-wrappers are used, a line similar to the following should be added to /etc/hosts.allow
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Si se usan tcp-wrappers, se debe agregar una l&iacute;nea similar a la siguiente en
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{{File|/etc/hosts.allow|<pre><nowiki>
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/etc/hosts.allow
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...
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sendmail: 127.0.0.1
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sendmail: 127.0.0.1
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</nowiki></pre>}}
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If different filters are used, it's necessary to allow the access to the port localhost:25/tcp from localhost:1025/tcp
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Si se usan otros filtros se debe permitir el acceso al puerto localhost:25/tcp desde localhost:>1025/tcp
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== Cleaning-up (optional)==
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Remove ssmtp
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== Limpieza (opcional)==
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{{Command|<nowiki>aptitude remove ssmtp</nowiki>}}
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Eliminar el ssmtp
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If the DNS setup isn't defined in /etc/network/interfaces, remove resolvconf
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{{Command|<nowiki>aptitude remove resolvconf</nowiki>}}
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aptitude remove ssmtp
 
  
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Si la configuración DNS no está definida en /etc/network/interfaces, eliminar el resolvconf
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            </p>
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aptitude remove resolvconf
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        </div>
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    </div>
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</div>

Latest revision as of 20:12, 9 April 2015


Logo_sc33.png

Mail server

Instalation Null Client in Debian

Sendmail Null Client (Debian)

Installation

aptitude install sendmail

Setting-up

1. Replace ${ADMIN_EMAIL}, ${HOSTNAME}, ${DNS_DOMAIN}, ${IP_ADDR} for the adequate values.

2. Redirect messages from root, postmaster, admin, etc, to the administrator.

Edit /etc/mail/aliases

File: /etc/mail/aliases
<nowiki>
...
operator: root
admin: root
root: ${ADMIN_EMAIL}
...
</nowiki>

Update the aliases database:

/usr/sbin/newaliases

4. Verify that sendmail knows about the different names that the client can have.

Edit /etc/mail/local-host-names

File: /etc/mail/local-host-names
<nowiki>
...
 localhost
 localhost.localdomain
 ${HOSTNAME}
 ${HOSTNAME}.${DNS_DOMAIN}
...
</nowiki>

Verify that the host appears in /etc/hosts

File: /etc/hosts
...
${IP_ADDR}  ${HOSTNAME}.${DNS_DOMAIN}  ${HOSTNAME}
...

Edit /etc/mail/sendmail.mc

File: /etc/mail/sendmail.mc
...
dnl #
dnl # Masquerading options
FEATURE(`always_add_domain')dnl
MASQUERADE_AS(`${HOSTNAME}.${DNS_DOMAIN}')dnl
FEATURE(`allmasquerade')dnl
FEATURE(`masquerade_envelope')dnl
dnl #
dnl # Default Mailer setup
MAILER_DEFINITIONS
MAILER(`local')dnl
MAILER(`smtp')dnl
...

5. Activate the new configuration

yes | sendmailconfig

Security

By default Debian installs sendmail enabled only for localhost.
If tcp-wrappers are used, a line similar to the following should be added to /etc/hosts.allow

File: /etc/hosts.allow
...
sendmail: 127.0.0.1

If different filters are used, it's necessary to allow the access to the port localhost:25/tcp from localhost:1025/tcp

Cleaning-up (optional)

Remove ssmtp

aptitude remove ssmtp

If the DNS setup isn't defined in /etc/network/interfaces, remove resolvconf

aptitude remove resolvconf


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