Post by Ed Ahlsen-GirardPost by Michael RasmussenOn Thu, 15 Nov 2018 20:48:50 -0600
Post by Ed Ahlsen-Girard** (claws-mail:24024): WARNING **: 20:39:51.968: [20:39:51] SSL/TLS
handshake failed
Above is your error. If you were able to get any meaningful back using
telnet which is plain text then it could indicate that the server does
not speak SSL over port 993 as one could expect.
Instead of telnet try openssl s_client to verify that SSL is infact
working.
Results of openssl s_client below signature. Appears to connect.
//truncated//
I got a slightly different output, but I did request more info.
openssl s_client -connect imap-mail.outlook.com:993 -tls1_2 -showcerts
CONNECTED(00000003)
---
Certificate chain
0 s:/C=US/ST=Washington/L=Redmond/O=Microsoft Corporation/CN=outlook.com
i:/C=US/O=DigiCert Inc/CN=DigiCert Cloud Services CA-1
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----
1 s:/C=US/O=DigiCert Inc/CN=DigiCert Cloud Services CA-1
i:/C=US/O=DigiCert Inc/OU=www.digicert.com/CN=DigiCert Global Root CA
-----BEGIN CERTIFICATE-----
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J4XVpOqw4qXcBiklkOjOLOnp0Hzvzg==
-----END CERTIFICATE-----
---
Server certificate
subject=/C=US/ST=Washington/L=Redmond/O=Microsoft Corporation/CN=outlook.com
issuer=/C=US/O=DigiCert Inc/CN=DigiCert Cloud Services CA-1
---
No client certificate CA names sent
Peer signing digest: SHA1
Server Temp Key: ECDH, P-256, 256 bits
---
SSL handshake has read 3863 bytes and written 433 bytes
---
New, TLSv1/SSLv3, Cipher is ECDHE-RSA-AES256-GCM-SHA384
Server public key is 2048 bit
Secure Renegotiation IS supported
Compression: NONE
Expansion: NONE
No ALPN negotiated
SSL-Session:
Protocol : TLSv1.2
Cipher : ECDHE-RSA-AES256-GCM-SHA384
Session-ID: 78450000358A06D84EE8AAAAC631BBF14D44672E152C9709D43086E984847EC9
Session-ID-ctx:
Master-Key: D4EE066B6F9087FFFB6CFD2D36EEC9AA165C95CD3E86268E9A9D032B95B5D46F67B7DA22C0218321C45E9399EFE823A3
Key-Arg : None
PSK identity: None
PSK identity hint: None
SRP username: None
Start Time: 1542378556
Timeout : 7200 (sec)
Verify return code: 0 (ok)
---
* OK The Microsoft Exchange IMAP4 service is ready. [QgBOADcAUABSADEAMABDAEEAMAAwADEAOAAuAG4AYQBtAHAAcgBkADEAMAAuAHAAcgBvAGQALgBvAHUAdABsAG8AbwBrAC4AYwBvAG0A]