[Xymon] IMAPS & POP3S tests

[Matthew Daubenspeck]

On Mon, Nov 25, 2019 at 02:03:59PM +0100, Laurent Frigault wrote:
> On Fri, Nov 22, 2019 at 10:53:51AM +0100, Damien Martins wrote:
> Hi,
>  
> > Since I upgraded a system to Debian 10 running Xymon client 4.3.28, my 
> > Xymon server (running version 4.3.28 on Debian 10) reports errors for 
> > IMAPS & POP3S tests.
> > 
> > This is weird, because I have another server, running Xymon 4.3.28 too, 
> > that is not reporting any issue.
> > 
> > My IMAPS & POPS3S daemon is dovecot 2.3.4.1-5+deb10u1
> > 
> > It is quiet complicated to find the logs for this test, so I don't know 
> > what is going wrong.
> > 
> > Sometimes, the test goes green for few minutes.
> 
> 
> I'm not a debian specialist, but check the TLS protocol offerer by
> dovecot on this server. I had the same issue on freebsd when monitoring
> a dovecot offering TLS 1.3 even if xymon was build on a server running
> the same openssl version offering TLS 1.3.
> 
> I replaced the imaps/pop3s test by a perl scripts extension using
> IO::Socket::SSL build with the same openssl and it fixed the issue.
> 
> I reported this issue on this list but never got any answer.
> 
> https://lists.xymon.com/pipermail/xymon/2019-July/046585.html

I am seeing the exact same issue with Courier-IMAP on Gentoo Linux. It 
remains yellow most of the day, but randomly goes green for a few 
minutes. The odd thing is that the sslcert test gets the certs and 
displays the proper info there.