Folks: I wonder if anyone can help. Last night I upgraded our name server (ns.cce.ac.nz) to the latest BIND. SInce then we've had intermittant problems receiving email. Now I've reverted to the previous version: still got problems. The setup is: name server ns.cce.ac.nz 202.36.178.69 mail server mailbox.cce.ac.nz 202.36.178.67 we connect through xtra, but have our own domain and mail servers. traceroute is stopped at our firewall. Every name server that I check has the correct records (well, I think they are correct) except that for a few hours dns1.clear.net.nz had the wrong MX record. Taking xtra as an example: only one out of many test messages has reached us. One message from paradise.net.nz got here - in three hours. Others have not. I'd have thought there might be a routing problem - but I can telent to the boxes from outside this site. Folk from clear, telecom and domainz have all looked at the problem, and been a great help, but we seem to be no nearer a solution. One suggested trying nznog Can anyone suggest where I might start looking now? It's been 24 hours and I'm puzzled. Thanks for any suggestions. You might not be able to mail me: but gordonf(a)xtra.co.nz is still working :-) --- Gordon Findlay Manager, Information Technology Services Christchurch College of Education, PO Box 31065, Christchurch, New Zealand email: gordon.findlay(a)cce.ac.nz phone +64 3 343 7766, mobile 021 358 788 -These views are mine: the College may agree, by coincidence.- --------- To unsubscribe from nznog, send email to majordomo(a)list.waikato.ac.nz where the body of your message reads: unsubscribe nznog
Folks:
I wonder if anyone can help.
Last night I upgraded our name server (ns.cce.ac.nz) to the latest BIND. SInce then we've had intermittant problems receiving email. Now I've reverted to the previous version: still got problems.
The setup is: name server ns.cce.ac.nz 202.36.178.69 mail server mailbox.cce.ac.nz 202.36.178.67 we connect through xtra, but have our own domain and mail servers. traceroute is stopped at our firewall.
Every name server that I check has the correct records (well, I think they are correct) except that for a few hours dns1.clear.net.nz had the wrong MX record.
Taking xtra as an example: only one out of many test messages has reached us.
One message from paradise.net.nz got here - in three hours. Others have not.
I'd have thought there might be a routing problem - but I can telent to the boxes from outside this site.
Folk from clear, telecom and domainz have all looked at the problem, and been a great help, but we seem to be no nearer a solution. One suggested trying nznog
Can anyone suggest where I might start looking now? It's been 24 hours and I'm puzzled.
I suspect you have an internal DNS lookup problem. I manually connected to your SMTP server from here in Mexico OK, but when I gave it my From: address, everything ground to a halt. Check that your mail server can perform DNS lookup's OK. Maybe your new config on your local name server is refusing to answer queries from your mail server? The mail that got through OK may have been from domains that were still in the local NS cache, or mentioned in your hosts file. IMHO, YMMV, etc. Good luck. -- Andrew P. Gardner barcelona.com stolen, stmoritz.com stays. What's uniform about the UDRP? We could ask ICANN to send WIPO a clue, but do they have any to spare? Get active: http://www.domain-owners.org http://www.tldlobby.com --------- To unsubscribe from nznog, send email to majordomo(a)list.waikato.ac.nz where the body of your message reads: unsubscribe nznog
On Wed, 31 Jan 2001, Andy Gardner wrote:
Folks:
I wonder if anyone can help.
The problem is some nameservers have cached the old (incorrect) entry. tim(a)muffin:~> dig @203.98.21.10 cce.ac.nz mx ;; ANSWER SECTION: cce.ac.nz. 7448 IN MX 10 ns.cce.ac.nz. ^^^^^^^^^^^^ Can't SMTP to this. tim(a)muffin:~> dig @139.130.4.4 cce.ac.nz mx ;; ANSWER SECTION: cce.ac.nz. 4630 IN MX 5 mailbox.cce.ac.nz. Once some nameservers expire their cache for cce.ac.nz things will return to normal. Cheers, -- Tim Harman Phone: +64 9 980 8926 Network Engineer Mobile: +64 29 650 407 TelstraSaturn Email: timh(a)tsnz.net --------- To unsubscribe from nznog, send email to majordomo(a)list.waikato.ac.nz where the body of your message reads: unsubscribe nznog
Last night I upgraded our name server (ns.cce.ac.nz) to the latest BIND. SInce then we've had intermittant problems receiving email. Now I've reverted to the previous version: still got problems.
I wonder if anyone can help.
Your problem is with ns1.clear.net.nz (not dns1.clear.net.nz), this server is caching an MX for cce.ac.nz that points to ns.cce.ac.nz instead of mailbox.cce.ac.nz. As this server is authoritative for (.nz) the cached record may get dished out to (and cached by) resolvers that are traversing a lookup via delegation records. Clearing the cache on dns1.clear.net.nz will only prevent the bad record from spreading further but the problem won't clear completely until the record times out (about 8.00 pm tonight). If you are in a panic and have the technology translating incoming 202.36.178.69 port 25 to 202.36.178.67 port 25 should open the floodgates, otherwise its time to go home. --------- To unsubscribe from nznog, send email to majordomo(a)list.waikato.ac.nz where the body of your message reads: unsubscribe nznog
participants (4)
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Andy Gardner -
Brian Gibbons -
Gordon Findlay -
timh＠tsnz.net