Looking at a client site in SSL iT the certificate expires in Feb 2020. If I run the following check against SMTP ports the certificate that SMTP uses expires tomorrow.
Then if I go into Mail Settings for this client and without changing anything I hit "OK" the certificate gets updated to one issued in November and expires in Feb 2020...
Mail servers using old certifcate
Code:
echo | openssl s_client -servername clientxxx.com.au -connect clientxxx.com.au:587 2>/dev/null -starttls smtp | openssl x509 -noout -datesMail servers using old certifcate