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- Path: sparky!uunet!gumby!wupost!waikato.ac.nz!comp.vuw.ac.nz!asjl
- Newsgroups: comp.mail.misc
- Subject: Re: Inter-Network Mail Guide
- Message-ID: <Bx9F6x.EK8@comp.vuw.ac.nz>
- From: Andy.Linton@comp.vuw.ac.nz (Andy Linton)
- Date: Thu, 5 Nov 1992 20:20:57 GMT
- Sender: news@comp.vuw.ac.nz (News Admin)
- References: <1992Nov3.144316.28665@lut.ac.uk> <1992Nov5.024040.13063@kirk.bu.oz.au>
- Organization: Computer Science, Victoria University, Wellington, NEW ZEALAND
- Nntp-Posting-Host: bats.comp.vuw.ac.nz
- Lines: 47
-
-
- In article <1992Nov5.024040.13063@kirk.bu.oz.au>, bambi@bu.oz.au (David J. Hughes) writes:
- |> C.V.Copas@lut.ac.uk writes:
- |>
- |> >Well it doesn't SEEM to be a FAQ, so here goes. I wish to get mail to an
- |> >Australian machine
- |> >which I can verify is on the Internet by using <nslookup>. However, all my mail
- |> >vanishes into oblivion without any feedback to myself. Nor am I able to <ping>
- |> >the machine. Therefore, I have reasoned that I need to supply a routing node
- |> >specification, yes? Question: do any tools exist for determining that node?
- |>
- |>
- |> You can use nslookup to find the MX relay host for your target. Many
- |> hosts down here are in the DNS but don't actually connect to the net
- |> (ie. similar to usage of UUCP in the State etc.).
- |>
- |> If you can't get it through the MX gateway, you can always drop the
- |> postmaster on that host a line to find out why.
-
- I mailed Conn about this and it transpires that he and I can telnet to port 25 on
- the machine but not ping it. There is no MX for the host concerned but there
- is an MX for dsto.gov.au which points to fang.dsto.gov.au first and then to
- yoyo.aarnet.edu.au
-
- e.g.
-
- $ telnet csd0.dsto.gov.au 25
- Trying 131.185.10.4...
- Connected to csd0.dsto.gov.au.
- Escape character is '^]'.
- 220 CSD0.DSTO.GOV.AU TGV/MultiNet SMTP service ready.
- helo bats.comp.vuw.ac.nz
- 250 CSD0.DSTO.GOV.AU ; Hello bats.comp.vuw.ac.nz, pleased to meet you.
- vrfy postmaster
- 250 CSD Postmaster <postmaster>
- quit
- 221 CSD0.DSTO.GOV.AU TGV/MultiNet SMTP service complete.
- Connection closed by foreign host.
-
- But if you 'ping' it you get:
-
- $ ping csd0.dsto.gov.au.
- ICMP Host Unreachable from gateway dsto.gw.au (139.130.176.2)
- for icmp from bats.comp.vuw.ac.nz (130.195.8.13) to csd0.dsto.gov.au (131.185.10.4)
-
- I suspect it's some sort of security measure in the router but it's a little
- strange.
-