On 13 Oct 2022, at 12:12, Jeff Koch wrote:
I think this would indicate that our Dovecot IMAP supports TLSv1.2 and
should work with the Outlook updates.
Yes, looks like a successful TLS 1.2 connection.
When testing with openssl, I would add the `-tls1_2` option to force use
of that protocol:
openssl s_client -connect example.com:993 -tls1_2
Also test submission on port 587 (and you can try testing smtp on port
25, although most networks block outgoing port 25 so you might not get a
valid result):
openssl s_client -connect example.com:587 -starttls smtp -tls1_2
----
Although, I like to use https://testssl.sh/ (`brew install testssl` on
macOS) which gives easier to understand and more thorough results:
Test submission (with STARTTLS on port 587):
testssl.sh -t smtp mx.strangecode.com:587
Test imap (with SSL-only on port 993):
testssl.sh example.com:993
Quinn
