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List:       postfix-users
Subject:    Re: warning: TLS library problem
From:       Matus UHLAR - fantomas <uhlar () fantomas ! sk>
Date:       2018-01-25 8:34:40
Message-ID: 20180125083440.GD30969 () fantomas ! sk
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>> On Jan 24, 2018, at 9:25 PM, lists@lazygranch.com wrote:
>>
>> postfix/smtpd[14755]: warning: TLS library problem: error:140760FC:SSL
>> routines:SSL23_GET_CLIENT_HELLO:unknown protocol:s23_srvr.c:640:
>>
>> Should I be blocking some encryption method? I thought openssl dropped
>> support for the hackable protocols.

On 24.01.18 22:41, Viktor Dukhovni wrote:
>The error message is not what it appears.  The SSLv23 functions are the
>generic layer that handles all protocol versions before the actual protocol
>is determined.

for example, dropping connection or speaking plaintest to it can result in
this kind of error.

-- 
Matus UHLAR - fantomas, uhlar@fantomas.sk ; http://www.fantomas.sk/
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"That's nothing. If you play it forward it will install Windows."
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