Renewing sendmail.pem, and other self-signed certs

[Gordon Messmer]

On 10/28/2012 01:50 PM, Philip Prindeville wrote:
> I tried to use the script below to extract the key, subject, and
> serial #, and generate a new cert based on the same, but for whatever
> reason Thunderbird balks at it with:

Your message didn't include any indication of what the client says about 
the certificate.

Instead of using Thunderbird, use s_client:

openssl s_client -connect <your.smtp.net>:25 -starttls smtp -crlf