RE: [IMail Forum] Unix Reverse DNS
At 03:03 PM 12/6/2000 -0800, you wrote: >Yeah.. well at my ISP it does.. Switch ISP's. Cheers Mark Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
RE: [IMail Forum] Unix Reverse DNS
If they're using some CGI or other utility to update DNS (rather than updating db files directly), they could be hosing your serial number periodically due to a bug. Just an idea. This would explain "scratching" your zones. Alternately, maybe they're running a slave to another ISP's master with a two-week refresh. Disclosure: I didn't look at the output you sent but simply went with blind theory. Sandy »-Original Message- »From: [EMAIL PROTECTED] »[mailto:[EMAIL PROTECTED]]On Behalf Of Mark Simons »Sent: Wednesday, December 06, 2000 6:03 PM »To: [EMAIL PROTECTED] »Subject: RE: [IMail Forum] Unix Reverse DNS » » » »> >my ISP looses my DNS servers in my Reverse DNS lookup »> >97.19.208.in-addr.arpa .. »> »> explain what you mean by the preceding » »Approximately every two weeks the zone file for the Reverse »lookup changes »back to their old one whcih has only their DNS servers in the »file and all »of mine are missing. They had corrected it before you did »your lookup and »now it is working again. » » »This is not an exact duplicate but is pretty close to what it »changes to »every two weeks : » » » Recursion Desired=Yes, Recursion Available=Yes » QDCOUNT=1, ANCOUNT=3, NSCOUNT=2, ARCOUNT=2 »Question: » Name=97.19.208.in-addr.arpa, QTYPE=ALL, QCLASS=1 »Answer Section: »- Name=97.19.208.in-addr.arpa »Type=NS, Class=1, TTL=9112 (2 Hours 31 Minutes 52 »Seconds), RDLENGTH=20 »Name Server=ns1.datacourse.net »- Name=19.97.208.in-addr.arpa »Type=NS, Class=1, TTL=9112 (2 Hours 31 Minutes 52 »Seconds), RDLENGTH=6 »Name Server=ns2.datacourse.net »- Name=19.97.208.in-addr.arpa »Type=SOA, Class=1, TTL=3459 (57 Minutes 39 Seconds), RDLENGTH=29 »Name Server=ns1.datacourse.net, Mailbox=root.ns1.datacourse.net »Serial=94 »Refresh=3600 (1 Hour) »Retry=900 (15 Minutes) »Expire=360 (41 Days 16 Hours) »Minimum TTL=3600 (1 Hour) »Authority Records Section: »- Name=19.97.208.in-addr.arpa »Type=NS, Class=1, TTL=9112 (2 Hours 31 Minutes 52 »Seconds), RDLENGTH=2 »Name Server=ns1.datacourse.net »- Name=19.97.208.in-addr.arpa »Type=NS, Class=1, TTL=9112 (2 Hours 31 Minutes 52 »Seconds), RDLENGTH=2 »Name Server=ns2.datacourse.net »Additional Records Section: »- Name=ns1.datacourse.net »Type=A, Class=1, TTL=160765 (1 Day 20 Hours 39 Minutes 25 Seconds), »RDLENGTH=4 »IP Address=208.226.159.3 »- Name=ns2.datacourse.net »Type=A, Class=1, TTL=137069 (1 Day 14 Hours 4 Minutes 29 Seconds), »RDLENGTH=4 »IP Address=208.226.159.2 » » »And once they fix it.. it looks like this : » »Header: » ID=50306, QR=Response, Opcode=QUERY, RCODE=NO ERROR » Authoritative Answer=Yes, Truncation=No » Recursion Desired=Yes, Recursion Available=Yes » QDCOUNT=1, ANCOUNT=3, NSCOUNT=2, ARCOUNT=2 »Question: » Name=97.19.208.in-addr.arpa, QTYPE=ALL, QCLASS=1 »Answer Section: »- Name=97.19.208.in-addr.arpa »Type=NS, Class=1, TTL=86400 (1 Day), RDLENGTH=22 »Name Server=ROOT.CALIFORNIAN.NET »- Name=97.19.208.in-addr.arpa »Type=NS, Class=1, TTL=86400 (1 Day), RDLENGTH=13 »Name Server=REALSERVER.CALIFORNIAN.NET »- Name=97.19.208.in-addr.arpa »Type=SOA, Class=1, TTL=86400 (1 Day), RDLENGTH=29 »Name Server=ROOT.CALIFORNIAN.NET, Mailbox=root.ROOT.CALIFORNIAN.NET »Serial=43 »Refresh=10800 (3 Hours) »Retry=3600 (1 Hour) »Expire=604800 (7 Days) »Minimum TTL=86400 (1 Day) »Authority Records Section: »- Name=97.19.208.in-addr.arpa »Type=NS, Class=1, TTL=86400 (1 Day), RDLENGTH=2 »Name Server=ROOT.CALIFORNIAN.NET »- Name=97.19.208.in-addr.arpa »Type=NS, Class=1, TTL=86400 (1 Day), RDLENGTH=2 »Name Server=REALSERVER.CALIFORNIAN.NET »Additional Records Section: »- Name=ROOT.CALIFORNIAN.NET »Type=A, Class=1, TTL=160571 (1 Day 20 Hours 36 Minutes 11 Seconds), »RDLENGTH=4 »IP Address=208.19.97.8 »- Name=REALSERVER.CALIFORNIAN.NET »Type=A, Class=1, TTL=160571 (1 Day 20 Hours 36 Minutes 11 Seconds), »RDLENGTH=4 »IP Address=208.19.97.39 »--- » »> »> Stuff just doens't disappear from DNS. » »Yeah.. well at my ISP it does.. » »> »> Len »> »> »Thanks.. » »Please visit http://www.ipswitch.com/support/mailing-lists.html »to be removed from this list. » »An Archive of this list is available at: »http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
RE: [IMail Forum] Unix Reverse DNS
> > explain what you mean by the preceding > >Approximately every two weeks the zone file for the Reverse lookup changes >back to their old one whcih has only their DNS servers in the file and all >of mine are missing. They had corrected it before you did your lookup and >now it is working again. Well, they got serious pb's. Sounds like somebody's doing a restore of an old file or they are doing dynamic DNS updates and getting it wrong, or allowing some rogue machine to do dynamic updates or got their dynanmic update ACL wrong. Not much you can do about that. Len BIND8NT.MEIway.com : Binary for ISC BIND 8.2.3 T6B for NT4 & W2K IMGate.MEIway.com : Build free, hi-perf, anti-spam mail gateways Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
RE: [IMail Forum] Unix Reverse DNS
> >my ISP looses my DNS servers in my Reverse DNS lookup > >97.19.208.in-addr.arpa .. > > explain what you mean by the preceding Approximately every two weeks the zone file for the Reverse lookup changes back to their old one whcih has only their DNS servers in the file and all of mine are missing. They had corrected it before you did your lookup and now it is working again. This is not an exact duplicate but is pretty close to what it changes to every two weeks : Recursion Desired=Yes, Recursion Available=Yes QDCOUNT=1, ANCOUNT=3, NSCOUNT=2, ARCOUNT=2 Question: Name=97.19.208.in-addr.arpa, QTYPE=ALL, QCLASS=1 Answer Section: - Name=97.19.208.in-addr.arpa Type=NS, Class=1, TTL=9112 (2 Hours 31 Minutes 52 Seconds), RDLENGTH=20 Name Server=ns1.datacourse.net - Name=19.97.208.in-addr.arpa Type=NS, Class=1, TTL=9112 (2 Hours 31 Minutes 52 Seconds), RDLENGTH=6 Name Server=ns2.datacourse.net - Name=19.97.208.in-addr.arpa Type=SOA, Class=1, TTL=3459 (57 Minutes 39 Seconds), RDLENGTH=29 Name Server=ns1.datacourse.net, Mailbox=root.ns1.datacourse.net Serial=94 Refresh=3600 (1 Hour) Retry=900 (15 Minutes) Expire=360 (41 Days 16 Hours) Minimum TTL=3600 (1 Hour) Authority Records Section: - Name=19.97.208.in-addr.arpa Type=NS, Class=1, TTL=9112 (2 Hours 31 Minutes 52 Seconds), RDLENGTH=2 Name Server=ns1.datacourse.net - Name=19.97.208.in-addr.arpa Type=NS, Class=1, TTL=9112 (2 Hours 31 Minutes 52 Seconds), RDLENGTH=2 Name Server=ns2.datacourse.net Additional Records Section: - Name=ns1.datacourse.net Type=A, Class=1, TTL=160765 (1 Day 20 Hours 39 Minutes 25 Seconds), RDLENGTH=4 IP Address=208.226.159.3 - Name=ns2.datacourse.net Type=A, Class=1, TTL=137069 (1 Day 14 Hours 4 Minutes 29 Seconds), RDLENGTH=4 IP Address=208.226.159.2 And once they fix it.. it looks like this : Header: ID=50306, QR=Response, Opcode=QUERY, RCODE=NO ERROR Authoritative Answer=Yes, Truncation=No Recursion Desired=Yes, Recursion Available=Yes QDCOUNT=1, ANCOUNT=3, NSCOUNT=2, ARCOUNT=2 Question: Name=97.19.208.in-addr.arpa, QTYPE=ALL, QCLASS=1 Answer Section: - Name=97.19.208.in-addr.arpa Type=NS, Class=1, TTL=86400 (1 Day), RDLENGTH=22 Name Server=ROOT.CALIFORNIAN.NET - Name=97.19.208.in-addr.arpa Type=NS, Class=1, TTL=86400 (1 Day), RDLENGTH=13 Name Server=REALSERVER.CALIFORNIAN.NET - Name=97.19.208.in-addr.arpa Type=SOA, Class=1, TTL=86400 (1 Day), RDLENGTH=29 Name Server=ROOT.CALIFORNIAN.NET, Mailbox=root.ROOT.CALIFORNIAN.NET Serial=43 Refresh=10800 (3 Hours) Retry=3600 (1 Hour) Expire=604800 (7 Days) Minimum TTL=86400 (1 Day) Authority Records Section: - Name=97.19.208.in-addr.arpa Type=NS, Class=1, TTL=86400 (1 Day), RDLENGTH=2 Name Server=ROOT.CALIFORNIAN.NET - Name=97.19.208.in-addr.arpa Type=NS, Class=1, TTL=86400 (1 Day), RDLENGTH=2 Name Server=REALSERVER.CALIFORNIAN.NET Additional Records Section: - Name=ROOT.CALIFORNIAN.NET Type=A, Class=1, TTL=160571 (1 Day 20 Hours 36 Minutes 11 Seconds), RDLENGTH=4 IP Address=208.19.97.8 - Name=REALSERVER.CALIFORNIAN.NET Type=A, Class=1, TTL=160571 (1 Day 20 Hours 36 Minutes 11 Seconds), RDLENGTH=4 IP Address=208.19.97.39 --- > > Stuff just doens't disappear from DNS. Yeah.. well at my ISP it does.. > > Len > > Thanks.. Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
Re: [IMail Forum] Unix Reverse DNS
>my ISP looses my DNS servers in my Reverse DNS lookup >97.19.208.in-addr.arpa .. explain what you mean by the preceding >My primary DNS is root.californian.net >(208.19.97.8) and secondary is realserver.californian.net (208.19.97.39) ok, for your forward zone: # dig bakersfield.net ns ; <<>> DiG 8.3 <<>> bakersfield.net ns ;; res options: init recurs defnam dnsrch ;; got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4 ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 2 ;; QUERY SECTION: ;; bakersfield.net, type = NS, class = IN ;; ANSWER SECTION: bakersfield.net.2D IN NSROOT.CALIFORNIAN.NET. bakersfield.net.2D IN NSREALSERVER.CALIFORNIAN.NET. > ..my ISP's DNS is ns1.datacourse.net & ns2.datacourse.net .. each > time there >Tech guy goes in and re-adds me to their DNS and it all works fine for about >2 weeks then we start all over.. as you can see above, the datacourse.net NS's are not delegated with authority for your forward zone. for the reverse, right now, it looks cool: # dig -x 208.19.97.125 ; <<>> DiG 8.3 <<>> -x ;; res options: init recurs defnam dnsrch ;; got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4 ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2 ;; QUERY SECTION: ;; 125.97.19.208.in-addr.arpa, type = ANY, class = IN ;; ANSWER SECTION: 125.97.19.208.in-addr.arpa. 1D IN PTR www.bakersfield.net. ;; AUTHORITY SECTION: 97.19.208.in-addr.arpa. 1D IN NS ROOT.CALIFORNIAN.net. 97.19.208.in-addr.arpa. 1D IN NS REALSERVER.CALIFORNIAN.net. and: # dig 125.97.19.208.in-addr.arpa ptr ; <<>> DiG 8.3 <<>> 125.97.19.208.in-addr.arpa ptr ;; res options: init recurs defnam dnsrch ;; got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2 ;; QUERY SECTION: ;; 125.97.19.208.in-addr.arpa, type = PTR, class = IN ;; ANSWER SECTION: 125.97.19.208.in-addr.arpa. 23h58m14s IN PTR www.bakersfield.net. Stuff just doens't disappear from DNS. What specifically are technical symptoms you see when you think you have a pb? Len Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
Re: [IMail Forum] Unix Reverse DNS
btw, restrict zone trnasfers from you ns's Len Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
