Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g. crt.sh | example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.
My domain is: shardlow.org.uk
I ran this command: I am using stunnel on my server to serve POP3S protocol - I am trying to get mail using an iPhone and another use using an iPad - we are both getting certificate validation errors
It produced this output: Invalid cert
My web server is (include version): stunnel not web (4.56 on i686-pc-linux-gnu platform)
The operating system my web server runs on is (include version): linux (centos 5.11)
My hosting provider, if applicable, is: Simply Virtual Servers
I can login to a root shell on my machine (yes or no, or I don't know): yes
I'm using a control panel to manage my site (no, or provide the name and version of the control panel): no
The version of my client is (e.g. output of certbot --version or certbot-auto --version if you're using Certbot): acme v2.9.0
Further info:
This is the top part of the stunnel config - it is using fullchain.pem
cert = /etc/ssl/letsencrypt/mail.shardlow.org.uk.pem
key = /etc/ssl/letsencrypt/mail.shardlow.org.uk.key
chroot = /var/run/stunnel/
setuid = nobody
setgid = nobody
pid = /stunnel.pid
socket = l:TCP_NODELAY=1
socket = r:TCP_NODELAY=1
CAfile = /etc/ssl/letsencrypt/fullchain.pem
