[CentOS] Secure mail login problem

Bob Hoffman wrote:
> Hi all,
> Finally got around to making sendmail and dovecot use a secure log in
> procedure on my server.
> Now when I open up outlook it goes through a secure log in.
> Unfortunately, I am using my own self signed cert on the server for this.
> 
> Hence, I get, for every single account, everytime I open up outlook a
> warning about untrusted cert.
> 
> I have looked around and found a spot in IE to 'import' a cert of some
> kind...and this would seem like the way to make it work.
> 
> I am unsure exactly what I am supposed to copy or run on the server to then
> save to my home computer to then add to the 'import' part.
> 
> For sendmail I made a sendmail.pem and dovecot already came installed with
> its cert.
> 
> It is annoying to have the warnings everytime I open outlook up and if
> anyone has experience with this stuff I would not mind a quick helping hand.
> 
> Thanks all.
> 
> Bob
> 

What warnings are you getting?

You'll probably need to generate your own cert for dovecot too. The 
dovecot cert that ships with the package is for imap.example.com, so 
you'll probably get a warning that the cert doesn't match the host, and 
it also expired in Jan 2009 so you might get a warning for that too. If 
you generate your own cert, be sure the cert matches your FQ hostname.

The other common warning is for an untrusted or self-signed cert, which 
can normally be overcome by importing the cert the first time.

SSL/TLS for Dovecot is covered in the Wiki here:

http://wiki.centos.org/HowTos/postfix_sasl#head-67159b2747e8ff10df5bf5da41d4f21a245afd7f

I'll leave it for a sendmail user to advise you for that :)