Difference between revisions of "Instalation Null Client in Debian"
| Line 52: | Line 52: | ||
5. Activate the new configuration | 5. Activate the new configuration | ||
{{Command|<nowiki>yes | sendmailconfig</nowiki>}} | {{Command|<nowiki>yes | sendmailconfig</nowiki>}} | ||
| − | == | + | == Security == |
By default Debian installs sendmail enabled only for localhost.<br> | By default Debian installs sendmail enabled only for localhost.<br> | ||
If tcp-wrappers are used, a line similar to the following should be added to /etc/hosts.allow | If tcp-wrappers are used, a line similar to the following should be added to /etc/hosts.allow | ||
| Line 60: | Line 60: | ||
</nowiki></pre>}} | </nowiki></pre>}} | ||
If different filters are used, it's necessary to allow the access to the port localhost:25/tcp from localhost:1025/tcp | 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 | Remove ssmtp | ||
{{Command|<nowiki>aptitude remove ssmtp</nowiki>}} | {{Command|<nowiki>aptitude remove ssmtp</nowiki>}} | ||
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>}} | ||
Revision as of 21:16, 5 September 2014
Back to Mail server
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
