On 2023-08-01 07:58, Jason White via luv-main wrote:
The next step, I suppose, would be to obtain debugging output from an
IMAP client to find out whether it's the TCP connection, or TLS
(assuming it's connecting over TLS), or IMAP itself.
Thanks a million! I am getting two different responses from :993 (Error)
:433 (Pass). There is definitely something off with how things are set
up with TLS.
example@example-01:~$ openssl s_client -connect example.com.au:993
-tls1_2 -brief
4077CBBF3C7F0000:error:8000006F:system library:BIO_connect:Connection
refused:../crypto/bio/bio_sock2.c:125:calling connect()
4077CBBF3C7F0000:error:10000067:BIO routines:BIO_connect:connect
error:../crypto/bio/bio_sock2.c:127:
connect:errno=111
vs
example@example-01:~$ openssl s_client -connect example.com.au:443
-tls1_2 -brief
CONNECTION ESTABLISHED
Protocol version: TLSv1.2
Ciphersuite: ECDHE-RSA-AES256-GCM-SHA384
Peer certificate: CN = example.com.au
Hash used: SHA256
Signature type: RSA-PSS
Verification: OK
Supported Elliptic Curve Point Formats:
uncompressed:ansiX962_compressed_prime:ansiX962_compressed_char2
Server Temp Key: X25519, 253 bits
I will check that the server is running the same cert for both services
(I use LE so it should). If that isn't a fix I have more to go on.
Thanks for your help.
Thanks
Piers
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