Gentoo Archives: gentoo-user

From: Eray Aslan <eray.aslan@×××××××.tr>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] STARTTLS verification problem
Date: Sat, 10 Apr 2010 19:33:27
Message-Id: 4BC0D240.8090009@caf.com.tr
In Reply to: Re: [gentoo-user] STARTTLS verification problem by Mick
1 On 10.04.2010 19:04, Mick wrote:
2 > On Saturday 10 April 2010 16:32:37 Eray Aslan wrote:
3 >> On 10.04.2010 18:12, Robin Atwood wrote:
4 >>> That's very interesting, I have puzzled about STARTTLS stuff for years!
5 >>> How do I make sendmail trust the CAs?
6 >>
7 >> This is neither necessary nor recommended for TLS.
8 >
9 > Why would that be?
10
11 Who do you trust and for what? Adding various third party CA
12 certificates, i.e. using a PKI infrastructure for SMTP for the general
13 public:
14
15 Pros:
16 None
17
18 Cons:
19 * If you ever do certificate based access control, you will be in
20 for a surprise.
21 * MTA's TLS codes are well known for the more populer ones.
22 However, code paths that deal with a lot of CA certs are seldom used.
23 There might be corner cases.
24
25 On a more general note, please ask yourself "Do I really need a PKI?"
26 and avoid PKI if you can. It is a mess and is not the way forward.
27
28 --
29 Eray