getting mails to work

The WebServer seems to be running good, now about the mailserver.

Send mail via Webmail .... is working proberly
receiving mail .... not working

here is the return code from the undelivered messages:
Reporting-MTA: dns; fmmailgate06.web.de
Received-From-MTA: DNS; fmservice14.dlan.cinetic.de
Arrival-Date: Thu, 12 Jan 2006 22:40:05 +0100

Final-Recipient: RFC822; [email protected]
Action: failed
Status: 5.1.1
Remote-MTA: DNS; k1.kundencontroller.de
Diagnostic-Code: SMTP; 550 5.1.1 <[email protected]>... User unknown
Last-Attempt-Date: Thu, 12 Jan 2006 22:40:06 +0100


Where should i beginn to look for mistakes in the configuration.....?

 

Code:

~# dig mx project-bizarre.de

; <<>> DiG 9.2.1 <<>> mx project-bizarre.de
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 14496
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 0

;; QUESTION SECTION:
;project-bizarre.de.            IN      MX

;; ANSWER SECTION:
[B][COLOR="Red"]project-bizarre.de.     86400   IN      MX      10 k1.kundencontroller.de.[/COLOR][/B]

;; AUTHORITY SECTION:
project-bizarre.de.     86400   IN      NS      ns1.kundencontroller.de.
project-bizarre.de.     86400   IN      NS      ns2.kundencontroller.de.

;; Query time: 47 msec
;; SERVER: 81.169.163.104#53(81.169.163.104)
;; WHEN: Fri Jan 13 03:43:50 2006
;; MSG SIZE  rcvd: 108

Is k1.kundencontroller.de your server? Because that's the server the email arrived at, and this server does not know the email address [email protected].

 

when i type

dig mx project-bizare.de

on my server i got the following answer:

; <<>> DiG 9.2.4 <<>> mx project-bizare.de
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 19868
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;project-bizare.de. IN MX

;; AUTHORITY SECTION:
de. 10800 IN SOA f.nic.de. ops.denic.de. 20060113
17 10800 7200 3600000 10800

;; Query time: 19 msec
;; SERVER: 85.31.185.124#53(85.31.185.124)
;; WHEN: Fri Jan 13 08:15:49 2006
;; MSG SIZE rcvd: 87