[Mailman-Users] Maybe Slightly OT, Bounces with "host name loopup failure"

[Tim Walter]

I suspect my mailman setup is stable and OK but a new problem has
developed and can't resolve it...

Mailman 2.1.3 running with sendmail on a raq4
mailman domain is emisnug.org.uk raq is raq****.uk2net.com
ISP is uk2.net

The list is running fine, mail to most people working OK to and fro etc

The problem exists for those people who use uk2net.net (i.e. the same
people the raq is hosted with for mail forwarding etc  They can post to
the list but not recieve anything

The transcript of the bounce messages are as follows

The original message was received at Fri, 17 Sep 2004 19:40:57 +0100
from localhost [127.0.0.1]

    ----- The following addresses had permanent fatal errors -----
<complists at domain1.com>
<emislist at domain2.com>

    ----- Transcript of session follows -----
<complists at domain1.com>... Deferred: Name server: ultra25.uk2net.net.:
host name lookup failure
<emislist at domain2.com>... Deferred: Name server: ultra19.uk2net.net.:
host name lookup failure
Message could not be delivered for 5 days
Message will be deleted from queue


Now that tells me that the problem is with uk2net.net and thier own MX
host names wont resolve

dig gives

Tims-Mac:~ TimWalter$ dig domain1.com MX

; <<>> DiG 9.2.2 <<>> domain1.com MX
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 46208
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 2

;; QUESTION SECTION:
;domain1.com.                    IN      MX

;; ANSWER SECTION:
domain1.com.             86400   IN      MX      10 ultra25.uk2net.net.
domain1.com.             86400   IN      MX      0 ultra26.uk2net.net.

;; ADDITIONAL SECTION:
ultra26.uk2net.net.     74664   IN      A       212.4.208.126
ultra25.uk2net.net.     122018  IN      A       212.4.208.125

;; Query time: 310 msec
;; SERVER: 192.168.0.10#53(192.168.0.10)
;; WHEN: Wed Sep 22 19:28:31 2004
;; MSG SIZE  rcvd: 118

Tims-Mac:~ TimWalter$ dig emisnug.org.uk MX

; <<>> DiG 9.2.2 <<>> emisnug.org.uk MX
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 30318
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; QUESTION SECTION:
;emisnug.org.uk.                        IN      MX

;; ANSWER SECTION:
emisnug.org.uk.         86400   IN      MX      30 emisnug.org.uk.

;; ADDITIONAL SECTION:
emisnug.org.uk.         86400   IN      A       213.239.46.179

;; Query time: 136 msec
;; SERVER: 192.168.0.10#53(192.168.0.10)
;; WHEN: Wed Sep 22 19:29:58 2004
;; MSG SIZE  rcvd: 64

Tims-Mac:~ TimWalter$ dig raq****.uk2net.com MX

; <<>> DiG 9.2.2 <<>> raq****.uk2net.com MX
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 20740
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;raq****.uk2net.com.            IN      MX

;; AUTHORITY SECTION:
uk2net.com.             10800   IN      SOA     ns1.uk2.net.
hostmaster.uk2net.com. 2004090902 1800 900 1209600 86400

;; Query time: 39 msec
;; SERVER: 192.168.0.10#53(192.168.0.10)
;; WHEN: Wed Sep 22 19:30:36 2004
;; MSG SIZE  rcvd: 94


the ISP resolutely refuses to answer the phone etc! but what can I do in
the meantime, is it my prob or elsewhere etc.

Cheers

Tim