Hmmm, and some additional details as well. If you don't explicitly specify the protocol, it *appears* to initially work.
$ openssl s_client -connect smtp.live.com:587 -starttls smtp -crlf CONNECTED(00000003) depth=1 C = BE, O = GlobalSign nv-sa, CN = GlobalSign Organization Validation CA - G2 verify error:num=20:unable to get local issuer certificate verify return:0 --- Certificate chain 0 s:/C=US/ST=Washington/L=Redmond/O=Microsoft Corporation/CN=smtp.live.com i:/C=BE/O=GlobalSign nv-sa/CN=GlobalSign Organization Validation CA - G2 1 s:/C=BE/O=GlobalSign nv-sa/CN=GlobalSign Organization Validation CA - G2 i:/C=BE/O=GlobalSign nv-sa/OU=Root CA/CN=GlobalSign Root CA --- ... --- New, TLSv1/SSLv3, Cipher is DES-CBC3-SHA Server public key is 2048 bit Secure Renegotiation IS NOT supported Compression: NONE Expansion: NONE SSL-Session: Protocol : TLSv1 Cipher : DES-CBC3-SHA Session-ID: 03120000A01E273F7BF3F54958B1D2ECD7F623A4C7BE42388C94A825513167DA Session-ID-ctx: Master-Key: F8AD960F07FD339AFF0467E54BCC684FC26C735AA58CBA6E6856967D726F9FCDE0D3CAB2A566E43163D574174442C6FD Key-Arg : None PSK identity: None PSK identity hint: None SRP username: None Start Time: 1375155252 Timeout : 300 (sec) Verify return code: 20 (unable to get local issuer certificate) --- 250 OK HOWEVER, if you send any command over the channel, it then causes an SSL disconnect error. $ echo -n -e 'ehlo messagingengine.com\nquit\n' | openssl s_client -connect smtp.live.com:587 -starttls smtp -crlf -ign_eof CONNECTED(00000003) ... New, TLSv1/SSLv3, Cipher is DES-CBC3-SHA Server public key is 2048 bit Secure Renegotiation IS NOT supported Compression: NONE Expansion: NONE SSL-Session: Protocol : TLSv1 Cipher : DES-CBC3-SHA Session-ID: 03120000A01E273F7BF3F54958B1D2ECD7F623A4C7BE42388C94A825513167DA Session-ID-ctx: Master-Key: F8AD960F07FD339AFF0467E54BCC684FC26C735AA58CBA6E6856967D726F9FCDE0D3CAB2A566E43163D574174442C6FD Key-Arg : None PSK identity: None PSK identity hint: None SRP username: None Start Time: 1375155252 Timeout : 300 (sec) Verify return code: 20 (unable to get local issuer certificate) --- 250 OK 250-BLU0-SMTP151.phx.gbl Hello [66.111.4.10] 250-TURN 250-SIZE 41943040 250-ETRN 250-PIPELINING 250-DSN 250-ENHANCEDSTATUSCODES 250-8bitmime 250-BINARYMIME 250-CHUNKING 250-VRFY 250-AUTH LOGIN PLAIN 250 OK 46912496296712:error:1408F10B:SSL routines:SSL3_GET_RECORD:wrong version number:s3_pkt.c:337: If you make it use RC4 instead, it appears to work again. [robm@betaweb1 postfix]$ echo -n -e 'ehlo messagingengine.com\nquit\n' | openssl s_client -connect smtp.live.com:587 -starttls smtp -crlf -ign_eof -cipher 'RC4' CONNECTED(00000003) ... --- New, TLSv1/SSLv3, Cipher is RC4-MD5 Server public key is 2048 bit Secure Renegotiation IS supported Compression: NONE Expansion: NONE SSL-Session: Protocol : TLSv1 Cipher : RC4-MD5 Session-ID: 0B190000A64170B904A7991A84EE9DB8E85FF96F23D8BEAF6F8085E9B4869DB4 Session-ID-ctx: Master-Key: 4D8540CCBE1F647D80A0407A82143564398CC38B447DB1583D4BF0CEDA329DB09C5403311D6D7D6AD2A0AAD05738A658 Key-Arg : None PSK identity: None PSK identity hint: None SRP username: None Start Time: 1375155540 Timeout : 300 (sec) Verify return code: 20 (unable to get local issuer certificate) --- 250 OK 250-BLU0-SMTP163.phx.gbl Hello [66.111.4.10] 250-TURN 250-SIZE 41943040 250-ETRN 250-PIPELINING 250-DSN 250-ENHANCEDSTATUSCODES 250-8bitmime 250-BINARYMIME 250-CHUNKING 250-VRFY 250-AUTH LOGIN PLAIN 250 OK 221 2.0.0 BLU0-SMTP163.phx.gbl Service closing transmission channel read:errno=0 So something is confused when using the DES-CBC3-SHA cipher it appears, but weirdly it appears only on the first write from openssl -> smtp.live.com, reads from smtp.live.com -> openssl appear ok??? Anyway, the failure mode is really annoying. STARTTLS appears to work at first, but then mysteriously fails at the first command you try and send to the server. Other problem reports: http://postfix.1071664.n5.nabble.com/TLS-library-problem-after-updating-quot-openssl-quot-td16242.html http://stackoverflow.com/questions/17011816/python-smtp-ssl-wrong-version-on-linux -- Rob Mueller r...@fastmail.fm -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org