[Info-vax] Help to eliminate delay in establishing FTP connection (VMS V7.x on VAX with MultiNet V4.4)

[Steven Schweda]

> [...] they were seeing delays in connecting to the system with FTP.
> [...]

   So, he's the client and you're the server?

> At first, I thought it must have something to do with DNS, as it
> appeared the forwarders were all pointing to the internet, and I thought
> it must be attempting to do some reverse lookup. [...]

   That's the usual problem.  The server does a reverse look-up of the
client.  The test (on the server) is "nslookup <client_IP_address>".

   Strictly speaking, any such problem is with DNS at the client end,
but, if you want to be accommodating, you should be able to add a local
"hosts" entry which would obviate use of the faulty DNS server.

> The customer says he's not made any changes, [...]

   Sure, but no one intentionally fouls up his reverse DNS
configuration, and this sort of problem might go unnoticed at the other
end.

   Of course, if that "nslookup" command completes promptly, then you're
not seeing the usual problem.