Have you checked basic things like... the firewall on the mailserver is allowing port 53 tcp/udp the time on the mailserver is correct
Ben On 08/10/2012 11:25 PM, [email protected] wrote:
have a mail server on netregistry network using ns1/ns2/ns3.netregistry,net nameservers, all's well, EXCEPT: some remote servers won't accept our mail with "Domain not found" reject: any thoughts on how to trouble shoot this further ? changing to non-netregistry nameservers allowed queued up outbound mails as well as inbound mails to be accepted ----------------------------- Aug 10 16:52:04 smtp: to=<[email protected]>, relay=anztpa-in-176.sge.net[152.91.3.176]:25, delay=178791, delays=178766/0.03/0.29/25, dsn=4.1.8, status=deferred (host anztpa-in-176.sge.net[152.91.3.176] said: 450 4.1.8 <[email protected]>: Sender address rejected: Domain not found (in reply to RCPT TO command)) ----------------------------- when I test nameservers, I can't fail them, get response OK remote network is run by Verizon who tells me all three nameservers give consistent/continual SERVFAIL from their network: ----------------------------- verizon said: The issue that is being experienced and causing the mail delivery failures is that when our dns servers in the 152.91.0.0/16 network query records for the dom.com.au domain we are receiving serv fail responses rather than a record being returned. We have no upstream cache and receive the failures when diging at the servers directly. I have attached the output below. ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 1692 ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0 ;; WARNING: recursion requested but not available .... ------------------------------ thanks for any pointers,
-- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
