Gerd Hoerst via Postfix-users skrev den 2023-03-18 14:54:
smtpd_tls_mandatory_protocols = !SSLv2, !SSLv3, !TLSv1
smtpd_tls_protocols = !SSLv2,!SSLv3,!TLSv1
in main.cf
in main.cf put a # in this lines, so its default from postconf -d
but unfortunately i have a sender (its a printer) which is not capable
for TLSv1.1 and up..
On 18.03.23 19:35, Benny Pedersen via Postfix-users wrote:
add in master.cf
-o smtpd_tls_mandatory_protocols=!SSLv2,!SSLv3,!TLSv1
-o smtpd_tls_protocols=!SSLv2,!SSLv3,!TLSv1
so only port 465, 587 have this, but you should keep defaults
Usually, smtpd_tls_mandatory_protocols are user on 465 and 587, while
smtpd_tls_protocols is used on port 25.
So you only need to define them properly in main.cf, unless you play with
different settings on different ports.
I would generally allow the printer to use port 25.
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