Re: Weird SMTP problem?
On Tue, 13 Nov 2001, Jack Smith wrote:
> Paul Haesler wrote:
>
> > Hi all,
> >
> > Just experienced a very weird problem.
> >
> > My Debian box has 2 NIC's: eth1 connects to the cable modem
> > and the outside world, eth0 connects to the Windoze boxen on my
> > LAN (192.168.1.0/8 - Masqueraded access to outside world.)
> >
> > Yesterday I had a weird thing.My Debian box could not connect
> > to my ISP's SMTP server - no response whatsoever.What's weird
> > is I could connect to the same box on the same port from my
> > masqueraded Windoze boxes!!
> >
> >Bringing the external ethernet interface down and back up again
> > fixed the problem - but why was it happening in the first place?
> >
> > Has anybody else seen anything like this, or have any theories
> > as to what was going on?
> >
>
> Was it the same IP address after you brought it down and up?I believe they
> have several different mail servers.Possibly the one your server was sending
> to was no longer there but you had cached the address?Just guessing.
Is there any way for me to clear this cache without taking the interface
down?
w2k has 'ipconfig /flushdns' (which is supposed to do that, but doesn't
seem to work)
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