[vox-tech] SMTP problem with cs.ucdavis.edu

[Rod Roark]

On Sunday 03 October 2004 07:04 pm, Mark K. Kim wrote:
> >From USC, I get this:
> 
>   aludra:~/>telnet cs.ucdavis.edu 25
>   Trying 169.237.6.6...
>   Connected to cs.ucdavis.edu.
>   Escape character is '^]'.
>   220 baton.cs.ucdavis.edu ESMTP Sendmail 8.12.10/8.12.10; Sun, 3 Oct 2004 19:02:07 -0700 (PDT)
> 
> Maybe try connecting to baton.cs.ucdavis.edu directly?

They are the same IP; same result.

This is very weird.  I see now that I get a 220 line after
about 50 seconds.  But if I then reply with
"HELO www.livepenguin.com" or even "QUIT", nothing else
happens, even after waiting a very long time.

I started up tcpdump as follows:

  # tcpdump -A -i eth1 -s 1024 -l -v net 169.237

and tried it again.  I see that there's an auth request
(identd, port 113) immediately after the SMTP connection:

  35612,25

to which my fakeidentd daemon responds with:

  35612, 25 : USERID : OTHER : nobody

and then, again, the 50-second pause.

Could cs.ucdavis.edu be expecting some other identd reply?

-- Rod

> -Mark
> 
> 
> On Sun, 3 Oct 2004, Rod Roark wrote:
> 
> > Could someone try this for me?
> >
> >     telnet cs.ucdavis.edu 25
> >
> > You're supposed to get something like this example:
> >
> >   $ telnet smtp.ucdavis.edu 25
> >   Trying 169.237.104.195...
> >   Connected to smtp.ucdavis.edu.
> >   Escape character is '^]'.
> >   220 warsaw.ucdavis.edu ESMTP Sendmail 8.12.10/8.12.9/it-defang-5.2.0; Sun, 3 Oct 2004 18:21:29 -0700 (PDT)
> >
> > However with cs.ucdavis.edu, I get a connection but no 220
> > line.  As a result there's some LUGOD mailing list mail
> > that's not being delivered.  I'm wondering if it's a
> > firewall issue.
> >
> > Any other insight as to what's going on would be much
> > appreciated.
> >
> > Thanks,
> >
> > -- Rod