testing ssl cert for smtps => "secure connection could not be established with this website"

Posted by cc young on Server Fault See other posts from Server Fault or by cc young
Published on 2012-09-05T07:57:58Z Indexed on 2012/09/05 9:40 UTC
Read the original article Hit count: 262

Filed under:

ssl

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postfix

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smtp

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ssl-certificate

testing ssl cert on server using a web service. https, imaps and pop3s all check, but smtps yields the message

"we advise you not to submit any confidential or personal data to this website
because a secure connection could not be established with this website."

running postfix

tls logging:

connect from s097.networking4all.com[213.249.64.242]
lost connection after UNKNOWN from s097.networking4all.com[213.249.64.242]
disconnect from s097.networking4all.com[213.249.64.242]

these work correctly:

telnet mydomain.net 587
openssl s_client -starttls smtp -crlf -connect mydomain.net:587

but cannot get email using ssl to log into either 587 or 564 - get same "UNKNOWN" problem. email smtp w/o ssh works fine.

the test site is http://www.networking4all.com/en/support/tools/site+check/

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