[Ach] Update postfix settings

Albert Krewinkel albert+crypto at zeitkraut.de
Tue Mar 8 23:53:33 CET 2016

New Postfix default settings might require reevaluation of some
parameters.  The recommendation currently is to leave the
`smtpd_tls_cipherlist` unchanged for maximum interoperability with other
servers.  The recommendation is now inconsistend across different
Postfix versions, as above parameter no longer defaults to `export` but
to `medium` in newer Postfix versions[1].  My preference would be to
follow the newer default and recommend the parameter to be set to
`medium`.  Same with `smtp_tls_cipherlist`.


[1]: http://www.postfix.org/postconf.5.html#smtpd_tls_ciphers

Albert Krewinkel
GPG: 8eed e3e2 e8c5 6f18 81fe  e836 388d c0b2 1f63 1124

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