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Here are the responses I get on my system to the ones you made... doug@bridget:~> host -t mx bellsouth.net bellsouth.net mail is handled (pri=10) by gateway-f1.isp.att.net bellsouth.net mail is handled (pri=10) by gateway-f2.isp.att.net doug@bridget:~> host gateway-f1.isp.att.net Host not found, try again. doug@bridget:~> host gateway-f2.isp.att.net Host not found, try again. doug@bridget:~> host -t soa bellsouth.net bellsouth.net start of authority auth-dns.asm.bellsouth.net hostmaster.be llsouth.net( 2010100101 ;serial (version) 1800 ;refresh period 900 ;retry refresh this often 432000 ;expiration period 10800 ;minimum TTL ) doug@bridget:~> host -t mx bellsouth.net auth-dns.asm.bellsouth.net Using domain server: Name: auth-dns.asm.bellsouth.net Address: 205.152.37.24 Aliases: bellsouth.net mail is handled (pri=10) by gateway-f1.isp.att.net bellsouth.net mail is handled (pri=10) by gateway-f2.isp.att.net doug@bridget:~> host -t mx bellsouth.net auth-dns.mia.bellsouth.net Using domain server: Name: auth-dns.mia.bellsouth.net Address: 205.152.144.24 Aliases: bellsouth.net mail is handled (pri=10) by gateway-f1.isp.att.net bellsouth.net mail is handled (pri=10) by gateway-f2.isp.att.net doug@bridget:~> host -t mx bellsouth.net auth-dns.msy.bellsouth.net Using domain server: Name: auth-dns.msy.bellsouth.net Address: 205.152.132.24 Aliases: bellsouth.net mail is handled (pri=10) by gateway-f1.isp.att.net bellsouth.net mail is handled (pri=10) by gateway-f2.isp.att.net On 2010年10月29日, Jason Stelzer wrote: > Couple things..... > > You should be trying more than just the one address. They have more than a > single mx record. One should hopefully be valid. > > Check to see if you're getting stale data from an old cached response. > > (cynic@paranoia)(03:39pm:10/28/10) > (~)> host -t mx bellsouth.net > bellsouth.net mail is handled by 10 gateway-f1.isp.att.net. > bellsouth.net mail is handled by 10 gateway-f2.isp.att.net. > (cynic@paranoia)(09:25am:10/29/10) > (~)> host gateway-f1.isp.att.net > gateway-f1.isp.att.net has address 204.127.217.16 > (cynic@paranoia)(09:25am:10/29/10) > (~)> host gateway-f2.isp.att.net > gateway-f2.isp.att.net has address 207.115.11.16 > (cynic@paranoia)(09:25am:10/29/10) > (~)> host -t soa bellsouth.net > bellsouth.net has SOA record auth-dns.asm.bellsouth.net. > hostmaster.bellsouth.net. 2010100101 1800 900 432000 10800 > > So they're using what looks like a date as the serial, and to me it looks > like it was updated fairly recently. They have a fairly long expire time, so > it could happen that there' s old crap in a cache between you and a dns > update. > > I'll go reboot the internet real quick. Let me know if it clears up :) > > In the mean time, see what you're getting for the soa data. They may have a > lame nameserver too, but the responses I get back from the authoritative > nameservers is valid. If the serial is different than the one above, that's > a big hint that there's something rotten in a cache waiting on expiration. > > whois bellsouth.net > <snip> > DNS Servers: > > auth-dns.asm.bellsouth.net > auth-dns.mia.bellsouth.net > auth-dns.msy.bellsouth.net > > > (cynic@paranoia)(09:30am:10/29/10) > (~)> host -t mx bellsouth.net auth-dns.asm.bellsouth.net > Using domain server: > Name: auth-dns.asm.bellsouth.net > Address: 205.152.37.24#53 > Aliases: > > bellsouth.net mail is handled by 10 gateway-f1.isp.att.net. > bellsouth.net mail is handled by 10 gateway-f2.isp.att.net. > (cynic@paranoia)(09:30am:10/29/10) > (~)> host -t mx bellsouth.net auth-dns.mia.bellsouth.net > Using domain server: > Name: auth-dns.mia.bellsouth.net > Address: 205.152.144.24#53 > Aliases: > > bellsouth.net mail is handled by 10 gateway-f2.isp.att.net. > bellsouth.net mail is handled by 10 gateway-f1.isp.att.net. > (cynic@paranoia)(09:30am:10/29/10) > (~)> host -t mx bellsouth.net auth-dns.msy.bellsouth.net > Using domain server: > Name: auth-dns.msy.bellsouth.net > Address: 205.152.132.24#53 > Aliases: > > bellsouth.net mail is handled by 10 gateway-f1.isp.att.net. > bellsouth.net mail is handled by 10 gateway-f2.isp.att.net. > > > If the serial you get does not line up with the answers you get from their > official name servers, then you have a cache problem somewhere. > > On Fri, Oct 29, 2010 at 9:20 AM, Julien Mills <julienfmills@yahoo.com>wrote: > > > I can't find it and I'm using Earthlink. > > > > > > julien@rocky:~$ ping gateway-f1.isp.att.net > > ping: unknown host gateway-f1.isp.att.net > > > > ------------------------------------------------------ > > Julien Mills julienfmills@yahoo.com > > > > Doug: > > > > I have verizon FIOS but I forget if I use their DNS or OpenDNS. > > > > Either way, I can see it: > > ping gateway-f1.isp.att.net > > PING gateway-f1.isp.att.net (204.127.217.16) 56(84) bytes of data. > > 64 bytes from gateway-f1.isp.att.net (204.127.217.16): icmp_seq=1 ttl=52 > > time=83.5 ms > > 64 bytes from gateway-f1.isp.att.net (204.127.217.16): icmp_seq=2 ttl=52 > > time=83.3 ms > > 64 bytes from gateway-f1.isp.att.net (204.127.217.16): icmp_seq=3 ttl=52 > > time=86.9 ms > > ^C > > - --- gateway-f1.isp.att.net ping statistics --- > > 3 packets transmitted, 3 received, 0% packet loss, time 6126ms > > rtt min/avg/max/mdev = 83.338/84.611/86.941/1.683 ms > > > > Hope that helps, > > Eric > > > > > > On 10/29/2010 12:45 AM, Doug Crompton wrote: > > > > > > I thought I would throw this out here for comments. I have been having > > > problems with mail to bellsouth.net In googling I see that others > > > seem to have this problem but no real answers. I have had alternate > > > contact with at least one of the recipients in the queue and they claim > > > they are getting other emails. This seems to be broken from just some > > > places. Using sendmail. Below is system info. The bottom line is that my > > > named is not finding 'gateway-f1.isp.att.net' Why I have no idea. I > > have > > > updated the root servers and restarted. All other operations lookups, > > > mail, etc. work fine. > > > > > > > > > Anyone have any ideas? > > > > > > Doug > > > > > > > > > My sendmail Queue.... > > > > > > o9R55W814301 895 Wed Oct 27 01:05 <doug@crompton.com<http://mc/compose?to=doug@crompton.com> > > > > > > (Deferred: Name server: gateway-f1.isp.att.net.: host > > > name lo) <hostmaster@bellsouth.net<http://mc/compose?to=hostmaster@bellsouth.net> > > > > > > > > > o9QFBtE07562 1469 Tue Oct 26 11:11 owner-nadc@crompton.com<http://mc/compose?to=owner-nadc@crompton.com> > > > (Deferred: Name server: gateway-f1.isp.att.net.: host > > > name lo) morrisjohnr@bellsouth.net<http://mc/compose?to=morrisjohnr@bellsouth.net> > > > > > > o9P2WV621087 1987 Sun Oct 24 22:32 owner-chs68@crompton.com<http://mc/compose?to=owner-chs68@crompton.com> > > > (Deferred: Name server: gateway-f1.isp.att.net.: host > > > name lo) Jennie Belle Doolittle <jgfalbey@bellsouth.net<http://mc/compose?to=jgfalbey@bellsouth.net> > > > > > > > > > > > > doug@bridget:~> nslookup gateway-f1.isp.att.net > > > Server: slate > > > Address: 192.168.0.2 > > > > > > *** slate can't find gateway-f1.isp.att.net: Non-existent host/domain > > > > > > doug@bridget:~> nslookup gateway-f1.isp.att.net 4.2.2.1 > > > Server: vnsc-pri.sys.gtei.net > > > Address: 4.2.2.1 > > > > > > Non-authoritative answer: > > > Name: gateway-f1.isp.att.net > > > Address: 204.127.217.16 > > > > > > slate:/home/doug # named -v > > > BIND 9.3.2 > > > > > > slate:/home/doug # ping 204.127.217.16 > > > PING 204.127.217.16 (204.127.217.16) 56(84) bytes of data. > > > 64 bytes from 204.127.217.16: icmp_seq=1 ttl=52 time=92.1 ms > > > 64 bytes from 204.127.217.16: icmp_seq=2 ttl=52 time=91.1 ms > > > 64 bytes from 204.127.217.16: icmp_seq=3 ttl=52 time=93.3 ms > > > > > > --- 204.127.217.16 ping statistics --- > > > 3 packets transmitted, 3 received, 0% packet loss, time 2003ms > > > rtt min/avg/max/mdev = 91.199/92.246/93.379/0.958 ms > > > > > > > > > slate:/home/doug # traceroute 204.127.217.16 > > > traceroute to 204.127.217.16 (204.127.217.16), 30 hops max, 40 byte > > > packets > > > 1 router10 (192.168.0.10) 0.963 ms 0.620 ms 0.778 ms > > > 2 adsl-gw.oldcity.dca.net (216.158.26.1) 12.529 ms 14.207 > > ms 14.248 > > > ms > > > 3 core-2.hq.dca.net (216.158.48.2) 13.011 ms 12.150 ms 12.900 ms > > > 4 core-225-gig-vlan-500.xo.dca.net (216.158.2.4) 15.767 ms 16.393 > > ms > > > 13.857 ms > > > 5 66.236.204.165.ptr.us.xo.net (66.236.204.165) 13.121 ms 13.487 ms > > > 13.287 ms > > > 6 ge11-1-4d0.mcr2.philadelphia-pa.us.xo.net (216.156.8.157) 14.062 ms > > > 15.913 ms 12.877 ms > > > 7 vb1131.rar3.nyc-ny.us.xo.net (216.156.0.45) 30.994 ms 27.369 ms > > > 15.454 ms > > > 8 ae0d1.cir1.nyc-ny.us.xo.net (207.88.13.41) 15.186 ms 16.248 ms > > > 17.342 ms > > > 9 206.111.13.246.ptr.us.xo.net (206.111.13.246) 18.649 ms 17.430 ms > > > 15.903 ms > > > 10 cr1.n54ny.ip.att.net (12.122.81.106) 91.900 ms 96.093 ms 91.863 > > > ms > > > 11 cr2.cgcil.ip.att.net (12.122.1.2) 95.273 ms 93.425 ms 92.875 ms > > > 12 cr1.cgcil.ip.att.net (12.122.2.53) 91.650 ms * 91.989 ms > > > 13 cr1.sffca.ip.att.net (12.122.4.121) 90.978 ms 91.347 ms 92.029 > > ms > > > 14 12.83.59.25 (12.83.59.25) 90.051 ms 93.161 ms 90.353 ms > > > 15 151.164.38.26 (151.164.38.26) 102.580 ms 99.375 ms 96.137 ms > > > 16 ded2-p8-0.snfcca.sbcglobal.net (151.164.95.113) 91.156 ms 91.592 > > ms > > > 88.924 ms > > > 17 ATTSI-2of2-San-Francisco-1155380.cust-rtr.pacbell.net (64.172.39.78) > > > 91.862 ms 91.688 ms 92.356 ms > > > 18 * * * > > > 19 * * * > > > 20 * * * > > > 21 * * * > > > 22 * * * > > > 23 * * * > > > 24 * * * > > > 25 * * * > > > 26 * * * > > > > > > > > >>From another system I get.... > > > > > > slate:/var/lib/named # nslookup > > >> gateway-f1.isp.att.net > > > ;; connection timed out; no servers could be reached > > > > > > > > > > > > **************************** > > > * Doug Crompton * > > > * Richboro, PA 18954 * > > > * 215-431-6307 * > > > * * > > > * doug@crompton.com <http://mc/compose?to=doug@crompton.com> * > > > * http://www.crompton.com * > > > **************************** > > > > > > > > > > > > > > > > > > > > > > > ___________________________________________________________________________ > > > Philadelphia Linux Users Group -- > > http://www.phillylinux.org > > > Announcements - > > http://lists.phillylinux.org/mailman/listinfo/plug-announce > > > General Discussion -- > > http://lists.phillylinux.org/mailman/listinfo/plug > > > > > > > - -- > > # Eric Lucas > > # > > # "Oh, I have slipped the surly bond of earth > > # And danced the skies on laughter-silvered wings... > > # -- John Gillespie Magee Jr > > -----BEGIN PGP SIGNATURE----- > > Version: GnuPG v1.4.10 (GNU/Linux) > > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ > > > > iEYEARECAAYFAkzKxuAACgkQ2sGpvXQrZ/51rgCfSBkPNuRhfdbBUzii5s91iv39 > > 4U4Ani7R30Eps7em7BL2vEERQrZ0orIl > > =bfz0 > > -----END PGP SIGNATURE----- > > ___________________________________________________________________________ > > Philadelphia Linux Users Group -- > > http://www.phillylinux.org > > Announcements - > > http://lists.phillylinux.org/mailman/listinfo/plug-announce > > General Discussion -- > > http://lists.phillylinux.org/mailman/listinfo/plug > > > > > > > > ___________________________________________________________________________ > > Philadelphia Linux Users Group -- > > http://www.phillylinux.org > > Announcements - > > http://lists.phillylinux.org/mailman/listinfo/plug-announce > > General Discussion -- > > http://lists.phillylinux.org/mailman/listinfo/plug > > > > > > > -- > J. > "Those that sacrifice essential liberty to obtain a little temporary safety deserve neither liberty nor safety." -- Ben Franklin (1759) **************************** * Doug Crompton * * Richboro, PA 18954 * * 215-431-6307 * * * * doug@crompton.com * * http://www.crompton.com * **************************** ___________________________________________________________________________ Philadelphia Linux Users Group -- http://www.phillylinux.org Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce General Discussion -- http://lists.phillylinux.org/mailman/listinfo/plug