MX problems

Cord MacLeod cordmacleod at gmail.com
Tue May 19 18:02:22 CDT 2009


http://en.wikipedia.org/wiki/Traceroute

You are looking for the difference between UDP and ICMP in that article.

On May 19, 2009, at 3:57 PM, Dave Larter 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.humenn at gmail.com]
> Sent: Tuesday, May 19, 2009 6:44 PM
> To: nanog at 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
>





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