Can Not Reach My Server From Thailand ?

[sin_bkk]

for unknown reasons, it is not possible to reach my mail server or web server from thailand ( web and mail is hosted by a US company, server is somwhere in Texas) . The mail and web-servers are not down , i can contact both servers via gprs phone . I also asked friends in singapore and europe to check for me via telnet if the mailserver is responding. everything is fine. However, here in thailand ( Ayutthaya) , i can not reach the server (mail.p-tech-consulting.com port 110 ) . I tried from a company network , also from the hotel and from an internet shop , same problem everywhere. I can reach other mail servers without any problem, for example the singnet mailserver (pop.singnet.com.sg 110 ) , so, my internet connection is ok for sure. Does anyone has any clue what is going on. I also spoke to a company called g-net in bangkok, they manage the network at the place where I am at the moment, but thye also don't have a clue .

[cdnvic]

Try http://opendns.com/ instead of your ISP's dns servers and see if that improves things.

[sin_bkk]

sorry, did not help but thanks for the tip anyway, good to know

[Guest Reimar]

I can't reach your servers; http://mail.p-tech-consulting.com and http://www.p-tech-consulting.com!

May check your IP is blacklisted from Thailand?!

Edited April 11, 2007 by Reimar

[sin_bkk]

yes, I know you can not reach it from thailand. However, if you ping it from the outside of thailand via a internt ping service, it is working well, also, when you try to reach it via a gprs phone connection, it is working well. Friends from singapore and europe can alos reach my mailserver ( checked everything via telnet). It was working fine 2 weeks ago when i was in tailand . How to check the blacklict ? Why could I be on there ? this is just a small technical consulting company , nothing else

[stumonster]

you are definitely being blocked from the server from thailand - maybe that server is hosting some material that the thai authorities find objectionable.

I can access your web page via a proxy server but not direct from Thailand.

your dns resolves correctly so it is not a dns issue.

see jpeg below - a tracert indicates a block from thai servers

[sjaak327]

Yep, no dns issues here, if you are getting the same IP address when doing a ping, then at least the DNS resolves correctly, if ping doesn't succeed there indeed might be a block.

[Prasert]

Thailand doesn't block IP addresses (that's too difficult for them), they just use a transparent proxy to block website traffic.

I'm getting the impression that there's a routing problem with the range of your hosting provider:

Traceroute from TOT:

tao-rt02# trace mail.p-tech-consulting.com

Translating "mail.p-tech-consulting.com"... [OK]

Type escape sequence to abort.

Tracing the route to topaz.host-care.com (72.29.86.3)

1 125-24-144-1.adsl.totbb.net (125.24.144.1) 76 msec 104 msec 92 msec

2 ge1-12-301.cs1-kkm.totisp.net (203.113.13.53) 76 msec 76 msec 96 msec

3 * * *

4 * * *

5 * * *

6 * * *

Traceroute from AMS-IX:

ams-rt02#trace mail.p-tech-consulting.com

Translating "mail.p-tech-consulting.com"... [OK]

Type escape sequence to abort.

Tracing the route to topaz.host-care.com (72.29.86.3)

1 81.171.38.65 0 msec 4 msec 4 msec

2 ge-3-19.ge-3-20.whw-core.eweka.nl (81.171.73.137) 4 msec 0 msec 4 msec

3 ge-3-7.ams-nyc.as12989.net (81.171.73.169) 100 msec 96 msec 96 msec

4 198.32.160.35 100 msec 100 msec 100 msec

5 core-01-so-1-0-0-0.nycl.twtelecom.net (66.192.240.197) 96 msec 156 msec 180 msec

6 dist-02-so-0-0-0-0.mtld.twtelecom.net (66.192.243.15) 136 msec 136 msec 136 msec

7 66.192.243.162 140 msec 136 msec 136 msec

8 66.162.30.58 120 msec 120 msec 124 msec

9 * * *

10 * * *

11 * * *

12 * * *

Trace from another ISP:

ehv-rt01#trace mail.p-tech-consulting.com

Translating "mail.p-tech-consulting.com"... [OK]

Type escape sequence to abort.

Tracing the route to p-tech-consulting.com (72.29.86.3)

1 62-177-189-3.dsl.bbeyond.nl (62.177.189.3) 16 msec 20 msec 20 msec

2 asdhem1rip01.bbned.nl (62.177.131.1) 16 msec 20 msec 16 msec

3 adm-b2-link.telia.net (213.248.103.161) 20 msec 20 msec 16 msec

4 adm-bb1-link.telia.net (80.91.249.124) 20 msec 16 msec 20 msec

5 ldn-bb1-pos7-0-0.telia.net (213.248.65.149) 28 msec 28 msec 28 msec

6 nyk-bb1-link.telia.net (80.91.249.249) 100 msec 100 msec 100 msec

7 nyk-b1-link.telia.net (213.248.83.226) 104 msec

nyk-b1-link.telia.net (213.248.82.14) 100 msec

nyk-b1-link.telia.net (213.248.83.226) 96 msec

8 te-4-2.car2.newyork1.level3.net (4.68.110.81) 96 msec 96 msec 96 msec

9 ae-31-55.ebr1.newyork1.level3.net (4.68.97.158) 96 msec

ae-32-52.ebr2.newyork1.level3.net (4.68.97.62) 96 msec

ae-31-55.ebr1.newyork1.level3.net (4.68.97.158) 100 msec

10 ae-3.ebr2.washington1.level3.net (4.69.132.93) 116 msec

ae-1-100.ebr1.newyork1.level3.net (4.69.132.25) 108 msec

ae-3.ebr1.washington1.level3.net (4.69.132.89) 112 msec

11 ae-2.ebr1.atlanta2.level3.net (4.69.132.85) 120 msec

ae-3.ebr1.washington1.level3.net (4.69.132.89) 108 msec 104 msec

12 ae-2.ebr1.atlanta2.level3.net (4.69.132.85) 124 msec 124 msec 128 msec

13 dimenoc-edge1.hostdime.com (4.79.116.26) 128 msec 128 msec

ae-6-6.car1.orlando1.level3.net (4.69.133.77) 128 msec

14 dimenoc-edge1.hostdime.com (4.79.116.26) 124 msec

72-29-88-34.static.dimenoc.com (72.29.88.34) 128 msec

dimenoc-edge1.hostdime.com (4.79.116.26) 124 msec

15 72-29-88-34.static.dimenoc.com (72.29.88.34) 128 msec * *

16 * * *

17 * * *

18 * * *

My opinion: the ISP of your hosting provider probably had problems in the last hours, causing route flaps. Once everything is stable again, it can still take several hours before all routes are back to normal.

[A_Traveller]

This has been going on for about 10 days now, there's a thread herein from mads about it as well. I can't get a sensible response from True either.

The server address is used by a large number of sites and for some reason has just disappeared at least if you use True. OpenDns doesn't rectify this.

I've tried to raise this with the US and have asked if they can look at the route in reverse as well.

One possible cause may be that 1 site using this IP address has been blocked. I think, possibly because people kept saying it here that ip address blocking is now used, in part, here. The other issue is that blocking is not done as one 'little firewall of Thailand, but is a jigsaw based on police, government departments & the ISP's themselves.

Regards

/edit add link //

http://www.thaivisa.com/forum/index.php?showtopic=115055

Edited April 11, 2007 by A_Traveller

[sin_bkk]

I have now confirmation that my site or address is blocked by Internet Thailand ( for unknown reason) . I found a (slow and unstable) workaround by using sockscap and connecting with pegasus mail ( outlook crashes when used with sockscap) to an free socks 5 proxy server , also , many free web proxys are blocked as well . Whils resaerching for this , I saw this "sorry, this site is blocked by thailand ministry of blala"....a trillion times , so , there is some serious shit going on behind the curtains

[youbet]

you are definitely being blocked from the server from thailand - maybe that server is hosting some material that the thai authorities find objectionable.

I can access your web page via a proxy server but not direct from Thailand.

Strange as I see;

telnet mail.p-tech-consulting.com 25

220-topaz.host-care.com ESMTP Exim 4.63 #1 Wed, 11 Apr 2007 04:35:38 -0400

220-We do not authorize the use of this system to transport unsolicited,

220 and/or bulk e-mail.

from the SMTP port 25, and on the pop3 port I see;

telnet mail.p-tech-consulting.com 110

+OK Hello there.

quit

+OK Better luck next time.

from TRUE, ToT and CSLoxinfo ADSl here in Bangkok.

So maybe you have a local configuration error as mentioned above. A traceroute will not always yeild results as ICMP may be disabled in the local routers which is most common these days.

Edited April 11, 2007 by youbet

[youbet]

I can't reach your servers; http://mail.p-tech-consulting.com and http://www.p-tech-consulting.com!

May check your IP is blacklisted from Thailand?!

Also not blocked it is a default apache screen still not set up and http://mail.p-tech-consulting.com/ says it was last modified on Monday, February 12, 2007 6:10:24 PM and this is a direct connection no proxy involved;

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Edited April 11, 2007 by youbet

[sin_bkk]

youbet, you might be in the lucky position to connect to my server, however, the situation here is still unsolved. Fact is, i can nether ping nor telnet my mailserver form company network, hotel network or internet shop , however, I can nontact my server when I use my mobile phone as a gprs modem, i can also coontact my mailserver via sockscap and a web proxy , but both solutions are unstable . Another fact is that it was working about 10 days ago without any problems. Also, my web hosting company came back with a feedback, they can trace the route up to hongkong ( hutchison server) where it it still working and then the address 218.189.12.234 is blocked by Internet Company Thailand . No idea if I can write to anyone in thailand, but not getting my mail is a serious problem for me.

[youbet]

youbet, you might be in the lucky position to connect to my server, however, the situation here is still unsolved. Fact is, i can nether ping nor telnet my mailserver form company network, hotel network or internet shop , however, I can nontact my server when I use my mobile phone as a gprs modem, i can also coontact my mailserver via sockscap and a web proxy , but both solutions are unstable . Another fact is that it was working about 10 days ago without any problems. Also, my web hosting company came back with a feedback, they can trace the route up to hongkong ( hutchison server) where it it still working and then the address 218.189.12.234 is blocked by Internet Company Thailand . No idea if I can write to anyone in thailand, but not getting my mail is a serious problem for me.

Can you give me your WAN address (the one the ISP allocates to your ASDL connection) as the one above being

global.hgc.com.hk is of little help as I can also get there.

This will allow me to trace a route from your pop3 box to your thai connection and see from here where it appears to be dead.

Only if you want me to that is.

[sin_bkk]

youbet, many thanks , got all detaild information from my web hosting company, thet where very helpfull..also, they could not really help at the end.

Any, to all of you who have a similar problem , I tried several solutions and found a stable one . I am using a software called proxifier, that works stable with outlook , firefox and explorer. I can open all websites ( also those which came up with this nice thai screen and the little english note below " this site is blocked by the thai ministry of ... ) . You have to find a working socks 5 proxi server , i am using one in france now whis is stable. The software also contains a proxi cheker , so , you can try out differen connections first .

[mouse]

All I can say is ............... Those affected by an unjustified block of their web sites should contact their own hosting service for assistance or submit a work order to get the problem rectified.

Edited April 15, 2007 by mouse