I have always received a number of warning messages (from
postfix/smtpd) stating 'TLS library problem' in my mail logs and I
think they are always followed by a dropped incoming connection. I
have hitherto assumed that they reflect a badly-configured (probably
spamming) foreign client/host, but the messages could be read as
implying an internal problem on my mailserver. Which is true?
The details of the reported error messages over the recent period can
be summarised thus:
$ grep -a "warning: TLS library problem" /var/log/mail.log.1
/var/log/mail.log|grep -o "error:.*"|sort|uniq -c|sort -nr
12 error:1408F10B:SSL routines:SSL3_GET_RECORD:wrong version
number:s3_pkt.c:362:
11 error:1408A10B:SSL routines:ssl3_get_client_hello:wrong
version number:s3_srvr.c:960:
10 error:140760FC:SSL routines:SSL23_GET_CLIENT_HELLO:unknown
protocol:s23_srvr.c:640:
2 error:1408A0E3:SSL routines:ssl3_get_client_hello:parse
tlsext:s3_srvr.c:1239:
Should I be concerned about these messages?
