On Sat, Jun 22, 2019 at 04:09:45AM +0000, Security Admin (NetSec) wrote:
> Within the last week or so I am suddenly unable to send or receive from
> Google Gmail. Any help with this issue would be appreciated.
What version of OpenSSL is installed on your system? Was it upgraded
recently? You are now negotiating TLSv1.3, was that the case previously?
> Receive Error from mail.log:
>
> Jun 21 20:59:26 portus postfix/smtpd[3726]: SSL_accept:TLSv1.3 write server
> certificate verify
> Jun 21 20:59:26 portus postfix/smtpd[3726]: SSL_accept:SSLv3/TLS write
> finished
Your SMTP server has just sent its certificate chain, and signature
over the handshake transcript (so far).
> Jun 21 20:59:26 portus postfix/smtpd[3726]: SSL3 alert read:fatal:illegal
> parameter
The SMTP client responds with an "illegal parameter" alert. As yet,
unclear why.
> Send Error from mail.log:
>
> Jun 21 21:05:47 portus postfix/smtpd[3726]: SSL_accept:SSLv3/TLS write
> certificate
> Jun 21 21:05:47 portus postfix/smtpd[3726]: SSL_accept:TLSv1.3 write server
> certificate verify
Sadly this too is a receive log.
--
Viktor.
