I need some help in trying to get to the source of this problem.
What problem? They filter ICMP requests, so traceroute doesn't work.
That's not really a problem.
Actually, traceroute uses UDP probe packets by default and more and more
hosts filter them out. I have a workaround for that:
traceroute -I risingstarmbc.com
This uses ICMP Echo packets instead, which are more likely to get
through. However, you either need to be root for that, or SUID on /bin
/traceroute, which is what I did because I'm the only person using this
machine; I'd not do it on a production box just on general principles.
In fact, I have an alias for it in .bashrc:
alias tracert=traceroute -I
which works fine. (On a production box, I'd put the alias in root's
.bashrc and use su -c to invoke it.)
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10-03-2012, 02:59 AM
Ed Greshko
Need help
On 10/03/2012 10:30 AM, Geoffrey Leach wrote:
> On 10/02/2012 07:15:38 PM, Lawrence Graves wrote:
>> I need some help in trying to get to the source of this problem. This
>> the readout of the command traceroute risingstarmbc.com. I am unable
>> to
>> connect to this email address and I don't know how to resolve it.
> [snip]
>
> First, what _exactly_is the symptom. All the traceroute shows is how to
> get to the site. Connecting with a browser proves that the site exists.
> Neither has any necessary connection with your problem.
FWIW, I rarely use "traceroute" these days since many routers now filter ICMP messages. Since the site being talked about is risingstarmbc.com and since the word "email" was used in the OP's message and since host returns....
[egreshko@meimei ~]$ host risingstarmbc.com
risingstarmbc.com has address 204.10.137.200
risingstarmbc.com mail is handled by 20 mx11.hostrack.net.
risingstarmbc.com mail is handled by 20 mx12.hostrack.net.risingstarmbc.com.
risingstarmbc.com mail is handled by 20 mx13.hostrack.net.
risingstarmbc.com mail is handled by 30 risingstarmbc.com.
I use tcptraceroute to check and get....
[egreshko@meimei ~]$ sudo tcptraceroute -n mx13.hostrack.net 25
traceroute to mx13.hostrack.net (204.10.142.245), 30 hops max, 60 byte packets
1 211.75.128.254 17.028 ms 17.153 ms 18.391 ms
2 168.95.229.6 17.571 ms 18.305 ms 18.261 ms
3 220.128.1.158 21.326 ms 22.501 ms 220.128.4.102 22.662 ms
4 220.128.7.153 71.588 ms 220.128.7.21 18.187 ms 220.128.7.153 71.947 ms
5 220.128.30.253 18.633 ms 220.128.6.81 18.601 ms 220.128.6.85 18.559 ms
6 211.72.108.205 147.272 ms 145.270 ms 211.72.108.193 147.468 ms
7 12.250.31.5 158.631 ms 160.829 ms 160.941 ms
8 12.122.137.182 165.511 ms 166.439 ms 166.166 ms
9 12.122.30.121 166.647 ms 165.911 ms 164.458 ms
10 12.123.155.5 160.948 ms 162.950 ms 161.006 ms
11 12.88.115.134 163.689 ms 164.018 ms 162.562 ms
12 204.10.142.245 <syn,ack> 163.922 ms 165.778 ms 165.622 ms
Same is true for all the MX hosts as well as (using the appropriate ports) for pop.risingstarmbc.com and imap.risingstarmbc.com.
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Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning. -- Rick Cook, The Wizardry Compiled
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10-04-2012, 03:24 PM
Jack Craig
Need help
sure, use dig to find the ip addr of the MX server for your targeted domain.
next ping the ip, get it?
next try to connect to mail port, eg, telnet IPADDR 25, get a connect?
make sense?
On Tue, Oct 2, 2012 at 7:15 PM, Lawrence Graves <lgraves95@gmail.com> wrote:
I need some help in trying to get to the source of
this problem. This the readout of the command traceroute
risingstarmbc.com. I am unable to connect to this email address
and I don't know how to resolve it. Could somebody give me
instruction on who I can touch base with to get this fixed. There
is nothing wrong with my email account. Have already checked that.
Nothing wrong with ISP provider.
Have a question? Ask away: http://ask.fedoraproject.org
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10-04-2012, 03:25 PM
Jack Craig
Need help
Oh, and one more point, if you dont have telnet, many dont anymore, find & download netcat, it'll work just fine...
hth, ...
On Tue, Oct 2, 2012 at 7:23 PM, Ed Greshko <Ed.Greshko@greshko.com> wrote:
On 10/03/2012 10:15 AM, Lawrence Graves wrote:
> I need some help in trying to get to the source of this problem. This the readout of the command traceroute risingstarmbc.com. I am unable to connect to this email address and I don't know how to resolve it. Could somebody give me instruction on who I can touch base with to get this fixed. There is nothing wrong with my email account. Have already checked that. Nothing wrong with ISP provider.
traceroute output is meaningless in this context.
explain what you mean by "unable to connect to this email address".
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10-05-2012, 08:08 AM
Tim
Need help
On Thu, 2012-10-04 at 08:25 -0700, Jack Craig wrote:
> Oh, and one more point, if you dont have telnet, many dont anymore,
> find & download netcat, it'll work just fine.
It's only the telnet client that you'd use to test services, that's a
simple installation. It's the telnet server that's a very bad idea (*)
to have on a system.
* There's no encryption over a telnet link, so logon credentials can be
seen by anybody snooping the network. To use a telnet server, you log
into it, so username and password are going to be sent unencrypted. But
a telnet client can be used to test various servers that you don't log
into, so it's safe to use as long as you think about what you send.
Don't send private replies to my address, the mailbox is ignored. I
read messages from the public lists.
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Need help
