On 3/23/2013 8:17, Sascha Cunz wrote:
> Hi list,
> 
> I'm glad to see that my mail from yesterday did finally leave the queue
> of my netqmail install. 
> 
> I'm recently having trouble to send mail to lists.gentoo.org via my
> netqmail. It says that it is _temporarily_ unable to do a CNAME lookup.
> But mails stay in queue until they eventually bounce. I have now configured
> a static smtp route to pigeon.gentoo.org and mails seem to go through.
> 
> I'm currently using google's DNS in /etc/resolv.conf (But the results from
> the DNS server of my ISP are the same):
> 
> I think that the real problem is, that $(dig @8.8.8.8 lists.gentoo.org any) 
> [1]
> doesn't give me a MX-Record at all. Also, directly asking for a MX-Record
> doesn't seem to report one[2].
> 
> I'm not too deep into DNS, so I'm asking for any clues on how to really
> solve this issue?
> 
> Sascha
> 
> [1]
> $ dig @8.8.8.8 list.gentoo.org any                                            
>                                                                               
>                                                                               
>                
>                                                                               
>                                                                               
>                                                                               
>                                      
> ; <<>> DiG 9.9.2 <<>> @8.8.8.8 list.gentoo.org any                            
>                                                                               
>                                                                               
>                                      
> ; (1 server found)
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 4294
> ;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 6, ADDITIONAL: 1
> 
> ;; OPT PSEUDOSECTION:
> ; EDNS: version: 0, flags:; udp: 512
> ;; QUESTION SECTION:
> ;list.gentoo.org.               IN      ANY
> 
> ;; AUTHORITY SECTION:
> gentoo.org.             1389    IN      SOA     ns1.gentoo.org. 
> hostmaster.gentoo.org. 1363715159 3600 3602 604800 3600
> gentoo.org.             1389    IN      RRSIG   SOA 5 2 86400 20130915164614 
> 20130319164614 52980 gentoo.org. 
> jWJE78zdR5x+B/N7H21C76vAW7RptfAaxb5fcXayB5Vx2zwhdCKWpcNa 
> oGwF0lNrJz+7d48FsY3YQpg6+HwEHVLUa+wSe3jZZeQr6qTWwskL4BsY 
> 7xQIvo6CcbXr+q+Rdpjuae6Gi9BZ1wrj2r1VQCijYjKwX32qq+kiqyK+ 
> ibevmHpI1tFydk5DYlYtDMoLD7dPyW46TH/Wtj4yEGHAyQ==
> gentoo.org.             3189    IN      NSEC    _include.gentoo.org. A NS SOA 
> MX TXT RRSIG NSEC DNSKEY
> gentoo.org.             3189    IN      RRSIG   NSEC 5 2 3600 20130915164614 
> 20130319164614 52980 gentoo.org. 
> OlIMzTIsTuwQqg2Jh/i7kCPCBl72gDz2zb33DLloua7LMJU9zs+3Fy52 
> AFIJ2BouWg0cIKouBXaVPX7DInly61KZ7WE8BBe1eXdq5ExCsyybE3F9 
> nYzM/3oPEdQ1sQoMyefsIG/JB8+9kbvKbhfpLercMVpSjLTSOWztvEBA 
> HHZee0E4mH/EcviPCkjR/4BWAvlYWTeiVb6xT2CXA5WmxA==
> ldap5.gentoo.org.       3189    IN      NSEC    lists.gentoo.org. CNAME RRSIG 
> NSEC
> ldap5.gentoo.org.       3189    IN      RRSIG   NSEC 5 3 3600 20130915164614 
> 20130319164614 52980 gentoo.org. 
> cIzfv2GF4UTkZaTkkvadlLNyG6oZ4IRb30AXZGfmMeA+PoohDJtHF23q 
> m8NOGjxa1z2y0ytb83PZFb6SCckpj9xE5C0oSIeMRsg51Vhb6pR0u2We 
> IyWRfHBArkCVHEVbuys1IdDnQrPjODhW5epdEjpjKUn6+Zzao82uBCfv 
> LyA/0sAqs0+qYrw+mVdZIAeuJKdywehKnnXVN05ndkuuRA==
> 
> ;; Query time: 64 msec
> ;; SERVER: 8.8.8.8#53(8.8.8.8)
> ;; WHEN: Sat Mar 23 12:56:33 2013
> ;; MSG SIZE  rcvd: 787
> 
> [2]
> $ dig @8.8.8.8 list.gentoo.org mx
> 
> ; <<>> DiG 9.9.2 <<>> @8.8.8.8 list.gentoo.org mx
> ; (1 server found)
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 54012
> ;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1
> 
> ;; OPT PSEUDOSECTION:
> ; EDNS: version: 0, flags:; udp: 512
> ;; QUESTION SECTION:
> ;list.gentoo.org.               IN      MX
> 
> ;; AUTHORITY SECTION:
> gentoo.org.             959     IN      SOA     ns1.gentoo.org. 
> hostmaster.gentoo.org. 1363715159 3600 3602 604800 3600
> 
> ;; Query time: 60 msec
> ;; SERVER: 8.8.8.8#53(8.8.8.8)
> ;; WHEN: Sat Mar 23 13:12:34 2013
> ;; MSG SIZE  rcvd: 95
> 
> 
> 
In your DNS queries you did "list.gentoo.org", the actual FQDN is
"lists.gentoo.org"

root@hellhound ~ # dig MX lists.gentoo.org

; <<>> DiG 9.7.3 <<>> MX lists.gentoo.org
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 53706
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 3, ADDITIONAL: 6

;; QUESTION SECTION:
;lists.gentoo.org.              IN      MX

;; ANSWER SECTION:
lists.gentoo.org.       43200   IN      MX      10 lists.gentoo.org.

-- 
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