Hostname, Mailname und MX Record

[Jens Holzkämper]

Tach,

Testen kannst du das bspw. hier: http://www.koepfer.de/index.php/administratorutilities/mailreversetest

selber testen, hilft die Zusammenhänge zu verstehen:

  
jens@doctor:~$ dig themisterunknown.de MX  
  
; <<>> DiG 9.7.3 <<>> themisterunknown.de MX  
;; global options: +cmd  
;; Got answer:  
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 2243  
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 1  
  
;; QUESTION SECTION:  
;themisterunknown.de.		IN	MX  
  
;; ANSWER SECTION:  
themisterunknown.de.	86400	IN	MX	10 mail.themisterunknown.de.  
  
;; AUTHORITY SECTION:  
themisterunknown.de.	3653	IN	NS	dns1.ispone-business.de.  
themisterunknown.de.	3653	IN	NS	dns2.ispone-business.de.  
  
;; ADDITIONAL SECTION:  
mail.themisterunknown.de. 3653	IN	A	109.73.50.139  
  
;; Query time: 32 msec  
;; SERVER: 127.0.0.1#53(127.0.0.1)  
;; WHEN: Fri Feb 15 13:21:02 2013  
;; MSG SIZE  rcvd: 128  
  
jens@doctor:~$ telnet mail.themisterunknown.de 25  
Trying 109.73.50.139...  
Connected to mail.themisterunknown.de.  
Escape character is '^]'.  
220 themisterunknown.de ESMTP Postfix (Ubuntu)  
^]  
telnet> q  
Connection closed.  
jens@doctor:~$ dig -x 109.73.50.139  
  
; <<>> DiG 9.7.3 <<>> -x 109.73.50.139  
;; global options: +cmd  
;; Got answer:  
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 49972  
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0  
  
;; QUESTION SECTION:  
;139.50.73.109.in-addr.arpa.	IN	PTR  
  
;; AUTHORITY SECTION:  
50\.73.109.in-addr.arpa.	300	IN	SOA	dns1.ispone-business.de. hostmaster.ispone-business.de. 2009111005 10800 1800 604800 300  
  
;; Query time: 43 msec  
;; SERVER: 127.0.0.1#53(127.0.0.1)  
;; WHEN: Fri Feb 15 13:21:46 2013  
;; MSG SIZE  rcvd: 114  

mfg
Woodfighter