I have a very similar issue, although my goal is not to negotiate TLS with
specific domains. I have:

main.cf

smtp_tls_security_level = may
smtp_tls_policy_maps = hash:/etc/postfix/tls_policy

/etc/postfix/tls_policy

example.com          none
.example.com          none

>From the documentation I read, I thought postfix would not try negotiating
TLS with the example.com mail server, but it does.

(I posted this question Mar. 5, but received no response).

Best regards,

J.L. Hill


Am 15.03.2013 13:11, schrieb Wietse Venema:
> Robert Schetterer:
>> Hi,
>>
>> if i use
>>
>> smtp_tls_security_level = may
>>
>> is
>>
>> smtp_tls_policy_maps honored ?
>
> As a general rule, per-destination SMTP/TLS policy lookup results
> override main.cf (and master.cf) settings.
>
> You enable smtp_tls_policy_maps lookups by specifying a non-empty
> value (there appears to be no other way to turn this off).
>
> Wietse
>

Hi Wietse, i set

smtp_tls_security_level = may

and

smtp_tls_policy_maps = hash:/etc/postfix/tls_policy

with

/etc/postfix/tls_policy

example.com encrypt

so it should goal

encrypt ,if possible ,with fallback to plain, for all destination

but for example.com encrypt only ( no plain fallback )



Best Regards
MfG Robert Schetterer

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