Postfix as a send-only SMTP relay: Difference between revisions

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*Put your SMTP host address to <code>/etc/postfix/sender_canonical_maps</code>:
*Put your SMTP host address to <code>/etc/postfix/sender_canonical_maps</code>:
<pre>
<pre>
/.+/    login@example.net
/.+/    user@example.net
</pre>
</pre>
[[Category: Linux]]
[[Category: Linux]]

Revision as of 18:06, 10 November 2019

  • # mkdir -p /etc/postfix/sasl
  • Add the following parameters to the end of /etc/postfix/main.cf:
myhostname = localhost.example.com
inet_interfaces = loopback-only
mynetworks = 127.0.0.0/8
relayhost = [smtp.example.net]:587
smtp_sasl_auth_enable = yes
smtp_sasl_security_options = noanonymous
smtp_sasl_password_maps = hash:/etc/postfix/sasl/sasl_passwd
smtp_tls_security_level = may
smtp_tls_CAfile = /etc/ssl/certs/ca-certificates.crt
sender_canonical_maps =  regexp:/etc/postfix/sender_canonical_maps
  • Put to /etc/postfix/sasl/sasl_passwd the login data of the SMTP host:
[smtp.example.net]:587 username:password
  • # postmap /etc/postfix/sasl/sasl_passwd
  • Put your SMTP host address to /etc/postfix/sender_canonical_maps:
/.+/    user@example.net