Difference between revisions of "Instalation Null Client in Debian"
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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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| + | <h3 class="panel-title">Instalation Null Client in Debian</h3> | ||
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| + | <div class="panel-body"> | ||
| + | <p><b>Sendmail Null Client (Debian)</b></p> | ||
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== Installation == | == Installation == | ||
{{Command|<nowiki>aptitude install sendmail</nowiki>}} | {{Command|<nowiki>aptitude install sendmail</nowiki>}} | ||
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If the DNS setup isn't defined in /etc/network/interfaces, remove resolvconf | If the DNS setup isn't defined in /etc/network/interfaces, remove resolvconf | ||
{{Command|<nowiki>aptitude remove resolvconf</nowiki>}} | {{Command|<nowiki>aptitude remove resolvconf</nowiki>}} | ||
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Latest revision as of 20:12, 9 April 2015
Instalation Null Client in Debian
Sendmail Null Client (Debian)
Installation
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
<nowiki>
...
operator: root
admin: root
root: ${ADMIN_EMAIL}
...
</nowiki>Update the aliases database:
4. Verify that sendmail knows about the different names that the client can have.
Edit /etc/mail/local-host-names
<nowiki>
...
localhost
localhost.localdomain
${HOSTNAME}
${HOSTNAME}.${DNS_DOMAIN}
...
</nowiki>Verify that the host appears in /etc/hosts
...
${IP_ADDR} ${HOSTNAME}.${DNS_DOMAIN} ${HOSTNAME}
...Edit /etc/mail/sendmail.mc
...
dnl #
dnl # Masquerading options
FEATURE(`always_add_domain')dnl
MASQUERADE_AS(`${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
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
... 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
If the DNS setup isn't defined in /etc/network/interfaces, remove resolvconf
