On Wed, 5 Dec 2001, Joshua S. Freeman wrote:
> I have an ISDN line coming into my house. I have a network running there
> that contains, among other things, a mailserver... 'pop.threeofus.com' and
> 'mail.threeofus.com'...
>
> I have an account there, my wife has an account on the machine.. a few
> other people do too... these are all pop accounts.
>
> We also have an AT&T cable modem. Plugged into that is an wireless base
> station which has a built in dhcp server.
>
> Before @home folded, my wife had no problem connecting to the 'net via
> AT&T/@home cable via her wireless card and picking up mail with a pop
> client off my network on the ISDN line...
>
> After AT&T took over the @home network, she can still connect to the 'net
> via AT&T via her wireless card, but she can NO LONGER pick up her mail
> with a pop client off the home network on the ISDN line.
>
> I firmly believe the problem lies with AT&T.. but I'm not 100% sure.. can
> anyone assist me in trouble shooting this?.. my wife is tired of using
> webmin to read her mail on the linux mail server on my network.
Webmin? Yikes! :) Well, hey, I'm on AT&T, sure, let's give it a whirl ...
test@server:~$ telnet pop.threeofus.com 110
Trying 199.232.38.4...
Connected to threeofus.com (199.232.38.4).
Escape character is '^]'.
<----- I just hit Enter here
Connection closed by foreign host.
test@server:~$ telnet pop.threeofus.com 110
Trying 199.232.38.4...
Connected to threeofus.com (199.232.38.4).
Escape character is '^]'.
USER foo <----- I tried USER foo + Enter here
Connection closed by foreign host.
Well, it seems very eager to hang up on me, I'll say that, but it's making
the initial connection at least ... though I'd feel a lot better if your
server made some small effort to identify itself ... can you retrieve via
POP from other networks? Do you use SSL (pop3s) instead of regular POP?
Are there any restrictions based on IP address on the POP daemon (that
haven't been updated since AT&T recently made a bunch of IP subnet number
changes)? Does it listen on something other than standard POP port 110?
Any recent changes to the POP daemon config, or maybe the firewall config?
Perhaps this technique will help:
http://linuxdocs.org/HOWTOs/mini/Secure-POP+SSH.html
<punmode=truly_horrid>
Keep us posted, ok?
</punmode>
--
Bill Mullen
[EMAIL PROTECTED]
Dec 5, 2001
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