Re: [exim] A TLS fatal alert has been received.: Insufficien…

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Author: Viktor Dukhovni
Date:  
To: Exim-users
Subject: Re: [exim] A TLS fatal alert has been received.: Insufficient security
> On Jun 11, 2019, at 4:30 AM, Jeremy Harris via Exim-users <exim-users@???> wrote:
>
>> 2019-03-25 09:00:08 1h8LSh-0001oy-Uy DANE attempt failed; TLS connection
>> to mx-ha03.web.de [212.227.15.17]: (certificate verification failed): TLSA
>> record problem: There was error initializing the DNS query.
>
> It'd be useful to know whether this DNS access is being done by
> Exim of by the GnuTLS library. Would it be possible to get debug
> output for a sample? What about a packet capture, for the same sample?


A quick web search shows that the error message in question is from
the GnuTLS DANE library in dane_state_init() trying to initialize
libunbound...

-- 
    Viktor.