Re: Strange TLS error when sending mail from one server to my Postfix SMTP server

2018-12-11 Thread Matus UHLAR - fantomas
> On Dec 10, 2018, at 8:00 PM, Sean Son > wrote: > > Thank you for the reply. Can the client be configured to trust more > than one SSL cert? most of clients support more than one certificate authority. On Mon, Dec 10, 2018 at 9:40 PM Viktor Dukhovni wrote: You've told us nothing about the

Re: Strange TLS error when sending mail from one server to my Postfix SMTP server

2018-12-11 Thread Sean Son
On Mon, Dec 10, 2018 at 9:40 PM Viktor Dukhovni wrote: > > On Dec 10, 2018, at 8:00 PM, Sean Son > wrote: > > > > Thank you for the reply. Can the client be configured to trust more > than one SSL cert? > > You've told us nothing about the client, so it would be a miracle > if someone on the li

Re: Strange TLS error when sending mail from one server to my Postfix SMTP server

2018-12-10 Thread Viktor Dukhovni
> On Dec 10, 2018, at 8:00 PM, Sean Son > wrote: > > Thank you for the reply. Can the client be configured to trust more than one > SSL cert? You've told us nothing about the client, so it would be a miracle if someone on the list could give an answer to that question. Is the client running

Re: Strange TLS error when sending mail from one server to my Postfix SMTP server

2018-12-10 Thread Sean Son
On Mon, Dec 10, 2018 at 6:57 PM Viktor Dukhovni wrote: > > On Dec 10, 2018, at 6:41 PM, Sean Son > wrote: > > > > 330462 Dec 7 20:39:21 mailer postfix/smtpd[12242]: SSL3 alert > read:fatal:unknown CA > > 330463 Dec 7 20:39:21 mailer postfix/smtpd[12242]: SSL_accept:failed > in SSLv3 read clie

Re: Strange TLS error when sending mail from one server to my Postfix SMTP server

2018-12-10 Thread Viktor Dukhovni
> On Dec 10, 2018, at 6:41 PM, Sean Son > wrote: > > 330462 Dec 7 20:39:21 mailer postfix/smtpd[12242]: SSL3 alert > read:fatal:unknown CA > 330463 Dec 7 20:39:21 mailer postfix/smtpd[12242]: SSL_accept:failed in > SSLv3 read client key exchange A > 330464 Dec 7 20:39:21 mailer postfix/sm

Strange TLS error when sending mail from one server to my Postfix SMTP server

2018-12-10 Thread Sean Son
hello all We have a RHEL 7 based server running monitoring software consisting of Groundwork Monitoring Software, which includes Nagios , Nedi, and other tools. This server is set up with TLS enabled and it uses a script to send email to any SMTP server that we choose. I have an SMTP server set u