That doesn't make sense. Savvis should not be routing between Sprintlink and UUNET. That would be a major filter failure, and cause massive issues.

From our UUNET NZ connection:

From one of our US servers, I can reach it on port 25 fine - albeit

12 0.so-7-0-0.CL2.KCY4.ALTER.NET (152.63.89.241) 171.781 ms 174.221 ms 172.283 ms 13 180.ATM6-0.GW3.KCY4.ALTER.NET (152.63.93.197) 173.544 ms 176.991 ms 174.773 ms 14 ameritrade-gw.customer.alter.net (157.130.165.126) 174.138 ms 174.975 ms 173.736 ms 15 * * * I also can't reach it from 202.89.32.0/19 which would imply it's not just 210/8 that's filtered. through UUNET. (nb. for those that don't know, UUNET uses alter.net for their hostnames). aj. On Fri, 8 Oct 2004, Gordon Smith wrote:

Looks like a Sprint routing issue. Ameritrade are a customer of alter.net & they should be reachable via Savvis when going across Sprint:

8 sl-bb24-ana-10-2.sprintlink.net (144.232.1.205) 133.225 ms 132.062 ms 132.340 ms 9 sl-st21-la-13-0.sprintlink.net (144.232.20.69) 134.608 ms 135.151 ms 134.132 ms 10 bpr2-so-3-0-0.LosAngelesEquinix.savvis.net (208.174.196.73) 132.760 ms 132.626 ms 133.118 ms 11 bpr1-ae0.LosAngelesEquinix.savvis.net (208.172.35.49) 134.405 ms 134.300 ms 134.417 ms 12 bpr1-so-5-0-0.LosAngeles.savvis.net (208.173.57.61) 140.357 ms 135.033 ms 134.136 ms 13 dcr1-ae1-0.LosAngeles.savvis.net (208.172.47.1) 136.275 ms 134.696 ms dcr2-ae1-0.LosAngeles.savvis.net (208.172.47.13) 133.501 ms 14 dcr2-loopback.SanFranciscosfo.savvis.net (206.24.210.100) 139.084 ms 137.953 ms 140.427 ms 15 bpr2-so-4-0-0.SanJoseEquinix.savvis.net (206.24.211.78) 137.337 ms 136.382 ms 136.519 ms 16 POS3-3.BR1.SJC7.ALTER.NET (208.173.55.2) 137.376 ms 137.765 ms *

Alter.net's backbone is reachable, but not all their routes are....

Cheers, Gordon

...

-----Original Message----- From: jfp [mailto:jfp(a)clearfield.com] Sent: Friday, 8 October 2004 12:36 p.m. To: nznog(a)list.waikato.ac.nz Subject: [nznog] Ameritrade.com smtp server issue

Hi people, we are having issues sending mail to Ameritrade.com.

It looks like their firewall is dropping the smtp connection to smtp.ameritrade.com (199.200.9.140) from us.

I can connect to it from our US server and they claim that they have lots of NZ customers with no issues.

So I think they are blocking the 210 block of addresses (we show up as 210.48.112) because we share that with Korea. (This is not a mail server block, we don't get a connection to the mail server, so it must be the firewall in front)

Could get some of you to try to telnet to smtp.ameritrade.com on port 25 and let me know the result and the block it's coming from?

I need some concrete evidence.

Thanks.

jfp.

-------------------------------------------------------------- ---------- Jean-Francois Pirus Senior Software Engineer Phone (+64-9) 358 2081 Clearfield Software Ltd Fax (+64-9) 358 2083 4th Floor 8-10 Whitaker Place Mob (+64-21) 640 779 P O Box 2348 Auckland, New Zealand -------------------------------------------------------------- ----------

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