On Sun, Jan 22, 2012 at 04:14:00PM +0100, xa...@arcor.de wrote:
> I'm facing a problem when TLS encryption is activated. When 
> connecting via TLS encrypted connection my email-client is telling 
> me that my server doesn't support STARTTLS. Where is my fault?

The Cisco Pix or Asa firewall with the broken "SMTP fixup" feature. 
Disable it.

> telnet session:
> -----------------
> 
> telnet example.org 25
> Trying 85.214.80.232...
> Connected to example.org.
> Escape character is '^]'.
> 220 **********

Telltale sign, the **'ed out banner.

> ehlo example.org
> 250-mail

(Unrelated, but you should use a FQDN $myhostname setting.)

> 250-PIPELINING
> 250-SIZE 10240000
> 250-VRFY
> 250-ETRN
> 250-XXXXXXXA

That probably was STARTTLS.

> 250-ENHANCEDSTATUSCODES
> 250-8BITMIME
> 250 DSN
> quit
> 221 2.0.0 Bye
> Connection closed by foreign host.
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