June 2016
Intermediate to advanced
152 pages
3h 30m
English
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Configuring Postfix to support TLS
Postfix can utilize TLS for securing communication in a few ways. We're going to look at each of them.
How to do it…
- Require TLS for authentication of local clients:
This is already handled in our existing configuration through the
smtpd_tls_security_level=encryptoption for the submission port. - Allow TLS of inbound/outbound mail delivery:
$ sudo postconf –e smtpd_tls_security_level=may - Set the TLS key and certificate files:
$ sudo postconf –e smtpd_tls_cert_file=/path/to/server.crt $ sudo postconf –e smtpd_tls_key_file=/path/to/server.key
How it works…
The most important thing we want to do here is ensure that passwords are not sent in plaintext. This means requiring authentication on the submission port, which the ...
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