Re:How to obtain and install an SSL/TSL certificate, for free
by Andys on Tuesday December 22, 2009 @02:37AM
(#1009574)
Yep, you can use the same certificate for email (IMAP, POP, TLS). Only works without warnings if your clients connect to the same hostname as the certificate is for (so I usually register something other than www.domain.com for the SSL site)
Re:How to obtain and install an SSL/TSL certificate, for free
by munctional on Monday December 21, 2009 @10:46PM
(#1009366)
Look up SPF + DKIM (aka "domain keys").
Is there any problem with buying a certificate and using the same certificate for your postfix TLS email authentication that you use for your web server authentication?
I would like to have authenticated email, to minimize the chance of my emails bouncing, and I was hoping to only purchase one certificate. I can't find anybody talking about mail server TLS email authentication on the certification websites. They only talk about web authentication and a bit about email client authentication.