[CentOS] Mail delivery failing with 450

Louis Lagendijk louis at lagendijk.xs4all.nl
Sat Mar 7 12:55:49 UTC 2009


hi James
there is a MX recond for mail.obrien-pifer.com, not for
obrien-pifer.com:
bash-3.2$ dig obrien-pifer.com any

; <<>> DiG 9.5.1-P1-RedHat-9.5.1-1.P1.fc10 <<>> obrien-pifer.com any
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 10894
;; flags: qr rd ra; QUERY: 1, ANSWER: 5, AUTHORITY: 4, ADDITIONAL: 4

;; QUESTION SECTION:
;obrien-pifer.com.		IN	ANY

;; ANSWER SECTION:
obrien-pifer.com.	36647	IN	A	70.62.90.185
obrien-pifer.com.	36647	IN	NS	porky.obrien-pifer.com.
obrien-pifer.com.	36647	IN	NS	sammy.obrien-pifer.com.
obrien-pifer.com.	36647	IN	NS	ns1.obrien-pifer.com.
obrien-pifer.com.	36647	IN	NS	ns2.obrien-pifer.com.

;; AUTHORITY SECTION:
obrien-pifer.com.	36647	IN	NS	ns2.obrien-pifer.com.
obrien-pifer.com.	36647	IN	NS	porky.obrien-pifer.com.
obrien-pifer.com.	36647	IN	NS	sammy.obrien-pifer.com.
obrien-pifer.com.	36647	IN	NS	ns1.obrien-pifer.com.

;; ADDITIONAL SECTION:
ns1.obrien-pifer.com.	36647	IN	A	70.62.90.185
ns2.obrien-pifer.com.	36647	IN	A	70.62.90.185
porky.obrien-pifer.com.	36647	IN	A	70.62.90.185
sammy.obrien-pifer.com.	36647	IN	A	70.62.90.185

;; Query time: 3 msec
;; SERVER: 192.168.159.1#53(192.168.159.1)
;; WHEN: Sat Mar  7 13:53:39 2009
;; MSG SIZE  rcvd: 246

bash-3.2$ dig mail.obrien-pifer.com any

; <<>> DiG 9.5.1-P1-RedHat-9.5.1-1.P1.fc10 <<>> mail.obrien-pifer.com
any
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 31815
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 4, ADDITIONAL: 4

;; QUESTION SECTION:
;mail.obrien-pifer.com.		IN	ANY

;; ANSWER SECTION:
mail.obrien-pifer.com.	38400	IN	MX	1 70.62.90.185.obrien-pifer.com.

;; AUTHORITY SECTION:
obrien-pifer.com.	36592	IN	NS	ns1.obrien-pifer.com.
obrien-pifer.com.	36592	IN	NS	ns2.obrien-pifer.com.
obrien-pifer.com.	36592	IN	NS	porky.obrien-pifer.com.
obrien-pifer.com.	36592	IN	NS	sammy.obrien-pifer.com.

;; ADDITIONAL SECTION:
ns1.obrien-pifer.com.	36592	IN	A	70.62.90.185
ns2.obrien-pifer.com.	36592	IN	A	70.62.90.185
porky.obrien-pifer.com.	36592	IN	A	70.62.90.185
sammy.obrien-pifer.com.	36592	IN	A	70.62.90.185

;; Query time: 140 msec
;; SERVER: 192.168.159.1#53(192.168.159.1)
;; WHEN: Sat Mar  7 13:54:34 2009
;; MSG SIZE  rcvd: 208

bash-3.2$ 

Br, Louis

On Sat, 2009-03-07 at 08:18 -0500, James Pifer wrote:
> I'm not sure why this started, but apparently I'm having a DNS problem.
> Yesterday mail started bouncing with this error:
> 450 Unable to find obrien-pifer.com
> 
> I think the messages eventually get delivered, but not sure. I guess
> I'll see if this one makes the list. 
> 
> I checked my domain using http://www.checkdns.net/ and it gives me a
> couple warnings. One is that there's no MX record, but there is. 
> 
> I use a smarthost for sending mail. 
> 
> My DNS records are: http://www.obrien-pifer.com/mydns.txt
> 
> Anyone see any problems in my DNS records?
> 
> Thanks,
> James
> 
> 
> 
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> CentOS at centos.org
> http://lists.centos.org/mailman/listinfo/centos



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