Thanks, actually I wasn't addressing the rr connects, no telling what they are doing/not doing just from the .edu.
-----Original Message----- From: Andre Guibert de Bruet [mailto:a...@siliconlandmark.com] Sent: Tuesday, May 19, 2009 7:14 PM To: Dave Larter Cc: Polar Humenn; nanog@nanog.org Subject: Re: MX problems Hi, This doesn't appear to be DNS related. You can see from the trace that the forward resolution is in fact occurring just fine. It would appear that Comcast/RoadRunner filters SMTP in your market (A quick Google search indicates that this has been happening in various places since at least 2004). Do you still have issues if you try using their SMTP servers? Cheers, /* Andre Guibert de Bruet * 436f 6465 2070 6f65 742e 2042 6974 206a */ /* Managing Partner * 6f63 6b65 792e 2053 7973 4164 6d69 6e2e */ /* GSM: +1 734 846 8758 * 2055 4e49 5820 736c 6575 7468 2e00 0000 */ /* WWW: siliconlandmark.com * C/C++, Java, Perl, PHP, SQL, XHTML, XML */ On May 19, 2009, at 7:07 PM, Dave Larter wrote: > Did you flush your dns cache? Its happened to me before, couldn't > resolve our own domains, turned out to be a bad switch, for almost > everything it worked fine but had intermittent problems with 53. I > have > seen it before with other prots too. > > > > From: Polar Humenn [mailto:polar.hum...@gmail.com] > Sent: Tuesday, May 19, 2009 7:02 PM > To: Dave Larter > Cc: nanog@nanog.org > Subject: Re: MX problems > > > >> From my mail log. Geez, I can't even get to Cornell, which is just >> down > the friggin road! (Yeah, I know, but really). > What is going on? > > May 19 18:58:26 greene postfix/smtp[5895]: connect to > mailin-01.mx.AOL.COM[205.188.159.57]: No route to host (port 25) > May 19 18:58:27 greene postfix/smtp[5904]: connect to > penguin.cs.cornell.edu[128.84.96.11]: No route to host (port 25) > May 19 18:58:27 greene postfix/smtp[5899]: connect to > mx.vgs.untd.com[64.136.52.37]: No route to host (port 25) > May 19 18:58:27 greene postfix/smtp[5919]: connect to > incoming3.american.edu[147.9.1.250]: No route to host (port 25) > May 19 18:58:30 greene postfix/smtp[5904]: connect to > iago.cs.cornell.edu[128.84.96.10]: No route to host (port 25) > May 19 18:58:30 greene postfix/smtp[5904]: 0992D8DDE: > to=<sim...@cs.cornell.edu>, relay=none, delay=371744, status=deferred > (connect to iago.cs.cornell.edu[128.84.96.10]: No route to host) > May 19 18:58:30 greene postfix/smtp[5919]: connect to > incoming2.american.edu[147.9.1.249]: No route to host (port 25) > May 19 18:58:30 greene postfix/smtp[5919]: 5F6AC8C0E: > to=<drs...@wamu.org>, relay=none, delay=116954, status=deferred > (connect > to incoming2.american.edu[147.9.1.249]: No route to host) > May 19 18:58:33 greene postfix/smtp[5901]: connect to > cisbec.net.s6a1.psmtp.com[64.18.5.10]: No route to host (port 25) > May 19 18:58:33 greene postfix/smtp[5913]: connect to > smtp-mx6.mac.com[17.148.20.69]: No route to host (port 25) > May 19 18:58:35 greene postfix/smtp[5895]: connect to > mailin-01.mx.AOL.COM[205.188.156.248]: No route to host (port 25) > May 19 18:58:36 greene postfix/smtp[5899]: connect to > mx.dca.untd.com[64.136.44.37]: No route to host (port 25) > May 19 18:58:36 greene postfix/smtp[5899]: D3A158876: > to=<becw...@juno.com>, relay=none, delay=183359, status=deferred > (connect to mx.dca.untd.com[64.136.44.37]: No route to host) > May 19 18:58:42 greene postfix/smtp[5901]: connect to > cisbec.net.s6a2.psmtp.com[64.18.5.11]: No route to host (port 25) > May 19 18:58:45 greene postfix/smtp[5901]: connect to > cisbec.net.s6b1.psmtp.com[64.18.5.13]: No route to host (port 25) > May 19 18:58:45 greene postfix/smtp[5910]: connect to > hrndva-smtpin01.mail.rr.com[71.74.56.243]: No route to host (port 25) > May 19 18:58:48 greene postfix/smtp[5901]: connect to > cisbec.net.s6b2.psmtp.com[64.18.5.14]: No route to host (port 25) > May 19 18:58:48 greene postfix/smtp[5901]: 0992D8DDE: > to=<araha...@cisbec.net>, relay=none, delay=371762, status=deferred > (connect to cisbec.net.s6b2.psmtp.com[64.18.5.14]: No route to host) > > > > On Tue, May 19, 2009 at 6:57 PM, Dave Larter <d...@stayonline.com> > wrote: > > Hi, I have no problem getting there, is that their mx's? > > Tracing route to s0.nanog.org [198.108.95.20] > over a maximum of 30 hops: > > 1 117 ms 128 ms 115 ms argon.socrdu.net [64.132.109.136] > 2 * 122 ms 126 ms 64.132.109.130 > 3 125 ms 106 ms 124 ms 64.132.109.129 > 4 130 ms 125 ms 113 ms 64-132-140-113.static.twtelecom.net > [64.132.140.113] > 5 129 ms 139 ms 139 ms scor-01-rif1.mtld.twtelecom.net > [66.192.243.134] > 6 129 ms 137 ms 148 ms te4-2.mpd02.dca01.atlas.cogentco.com > [154.54.26.121] > 7 152 ms 154 ms 240 ms te7-8.ccr01.jfk02.atlas.cogentco.com > [154.54.5.49] > 8 158 ms 153 ms 151 ms te9-8.mpd01.bos01.atlas.cogentco.com > [154.54.25.242] > 9 170 ms 172 ms 167 ms te7-8.ccr01.ord01.atlas.cogentco.com > [154.54.7.81] > 10 188 ms 172 ms 163 ms te8-2.mpd01.ord03.atlas.cogentco.com > [154.54.25.66] > 11 194 ms 170 ms 174 ms merit.demarc.cogentco.com > [66.28.21.234] > 12 164 ms 163 ms 166 ms tenge0-0-0-0x76.aa2.mich.net > [198.108.23.10] > 13 171 ms 164 ms 171 ms 198.108.22.186 > 14 171 ms 173 ms 171 ms s0.nanog.org [198.108.95.20] > > Trace complete. > > And yes, I only get that one mx/ip for nanog.org. > > > -----Original Message----- > From: Polar Humenn [mailto:polar.hum...@gmail.com] > Sent: Tuesday, May 19, 2009 6:44 PM > To: nanog@nanog.org > Subject: MX problems > > I'm in Syracuse NY, and I'm having problems getting sendmail to get to > MX > servers, with the errors of "No Route to Host" or "Connection timed > Out". > Apparently this is been happening for over 5 days. I can send mail > within > Syracuse University, but as soon as I venture out nothing. Traceroute > seems > to loose it after about the 9 or 10th hop. > > It seems that I can get to almost any website, but tracerouting or > pinging > these MX servers is not happening. > > Is there anything going on, or at least something that started 5-7 > days > ago? > > I find the same problem from within Syracuse Univeristy to my > RoadRunner > account at home (which does not pass through the university > routers). I > only > noticed it from the university since thats where I usually send my > email > through. Like I would no have been able to post to this list > >> From my home machine: >> traceroute s0.nanog.org > traceroute to s0.nanog.org (198.108.95.20), 30 hops max, 60 byte > packets > 1 192.168.99.1 (192.168.99.1) 0.211 ms 0.257 ms 0.302 ms > 2 10.217.224.1 (10.217.224.1) 13.754 ms 13.855 ms 14.291 ms > 3 gig2-2.syrcnysyr-rtr01.nyroc.rr.com (24.92.231.138) 18.442 ms > 22.701 > ms 26.908 ms > 4 gig1-1-0.syrcnyflk-rtr02.nyroc.rr.com (24.92.231.54) 31.279 ms > 31.454 > ms 31.591 ms > 5 ge-4-3-0.albynywav-rtr03.nyroc.rr.com (24.24.7.53) 37.429 ms > 37.604 > ms 37.779 ms > 6 ae-5-0.cr0.nyc30.tbone.rr.com (66.109.6.74) 41.329 ms 18.241 ms > 22.192 ms > 7 ae-1-0.pr0.nyc20.tbone.rr.com (66.109.6.163) 27.472 ms 19.542 ms > 23.419 ms > 8 te1-4.mpd01.jfk05.atlas.cogentco.com (154.54.13.185) 28.070 ms > 32.824 > ms 35.822 ms > 9 te9-3.ccr01.jfk02.atlas.cogentco.com (154.54.3.165) 40.796 ms > 40.549 > ms te2-4.ccr01.jfk02.atlas.cogentco.com (154.54.6.49) 40.958 ms > 10 te2-4.mpd01.bos01.atlas.cogentco.com (154.54.5.249) 48.704 ms > 47.549 > ms 48.468 ms > 11 te2-2.ccr01.ord01.atlas.cogentco.com (154.54.6.154) 57.836 ms > te8-8.mpd01.ord01.atlas.cogentco.com (154.54.24.54) 58.063 ms > te2-2.mpd01.ord01.atlas.cogentco.com (154.54.6.18) 46.700 ms > 12 vl3488.mpd01.ord03.atlas.cogentco.com (154.54.5.26) 56.905 ms > te3-4.mpd01.ord03.atlas.cogentco.com (154.54.6.206) 56.144 ms > vl3488.mpd01.ord03.atlas.cogentco.com (154.54.5.26) 45.245 ms > 13 Merit.demarc.cogentco.com (38.112.7.10) 44.512 ms > Merit.demarc.cogentco.com (66.28.21.234) 38.385 ms > Merit.demarc.cogentco.com (38.112.7.10) 40.305 ms > 14 tenge0-0-0-0x76.aa2.mich.net (198.108.23.10) 43.637 ms 42.601 ms > 43.902 ms > 15 198.108.22.186 (198.108.22.186) 48.455 ms 51.436 ms 44.070 ms > 16 * * * > 17 * * * > 18 * * * > 19 * * * > 20 * * * > 21 * * * > 22 * * * > 23 * * * > 24 * * * > 25 * * * > 26 * * * > 27 * * * > 28 * * * > 29 * * * > 30 * * * > > > Any ideas? > Cheers, > -Dr Polar > >
