Dan Mahoney via Postfix-users:
> Hey folks,
>
> We're in the process of trolling all our logs to figure out what we can
> ignore/filter/take action on, and we have a couple entries that I'm wondering
> what's happening under the hood:
>
> 2025-05-18T15:42:07+00:00 post.dayjob.org postfix/smtpd [mail.warning]
> warning: TLS library problem: error:0A0000C1:SSL routines::no shared
> cipher:/usr/src/crypto/openssl/ssl/statem/statem_srvr.c:1742:
>
> And
>
> 2025-05-19T08:20:09+00:00 amstel.dayjob.org postfix/smtpd [mail.warning]
> warning: TLS library problem: error:0A000412:SSL routines::sslv3 alert bad
> certificate:/usr/src/crypto/openssl/ssl/record/rec_layer_s3.c:1605:SSL alert
> number 42
>
> They're probably harmless, but I am sort of interested in what would make
> these happen?
Scans from researchers looking for obsolete features and implementation bugs.
Wietse
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