TLS misconfigured on inbound SMTP

[Roman]

According to this test, https://luxsci.com/smtp-tls-checker there is only TLS1.3 supported:

RESULTS FOR POSTE.IO

SMTP TLS GRADE: C+

TLS v1.0 Supported? No

TLS v1.2 Supported? No

TLS v1.3 Supported? Yes

Same for domains hosted on my poste.io instance

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[SH]

It seems that the test is somehow flawed, you can check yourself by

openssl s_client -starttls smtp -connect mail.poste.io:25 -tls1_2

You can also check version at log viewer at protocol details, connection should have line like:

2020-02-13 09:59:44         [tls] [INFO] - secured: cipher=ECDHE-RSA-AES128-GCM-SHA256 version=TLSv1.2 verified=false

Nevertheless I’ve contacted test owner to check how they are really testing TLS

[SH]

ref #733 show protocol version at log summary instead of generic TLS

→ <<cset 1aeb47d93e31>>

[SH]

Closing for now, this test seems to be flawed, you can check yourself from commandline that it actualy works