[TriLUG] help! weird sendmail problem

[Greg Brown]

Jason - you are correct, sir.  Here's my machine info:

Current IP Address:  66.26.92.247
Hostname: rdu26-92-247.nc.rr.com

Actually, RR's way of doing this isn't that bad as it seems to have a 
predictable hostname - assuming I can change the hostname of the box each 
time my IP address changes.  I've never tried this and I'm certain it will 
monumentally screw things up, but I'll give it a shot anyway.

Paloverde is the current hostname of the box, but that's unresolvable to 
anyone so I'll try changing the hostname around.   

Greg



On Monday 07 October 2002 11:59 am, you wrote:
> unless you are using RR business class, i don't think RR is going to give
> what you want.  assuming your user/account name is paloverde, that doesn't
> mean that your IP address maps to paloverde.nc.rr.com.  next time you're
> at home, try hitting checkip.dyndns.org in a browser, this will tell you
> your public IP address and the reverse resolution DNS name.  in my case (i
> have earthlink cable service, very similar to RR), my 'DNS' name is:
>
> Current IP Address: 24.136.143.105
> Hostname: user-0c8h3r9.cable.mindspring.com
>
> obviously not a very user-friendly DNS name.  note that if you resolve
> cerient.net (my domain name that i host from home) you will get my IP
> listed above.  if that's what you want, you'll need a dynamic DNS account
> which you can get for free from dyndns.org.  then you could have
> paloverde.dyndns.org always point to your RR IP address.  so when you send
> email from your house to lucent, they can reverse resolve your domain name
> in to the actual IP address the mail came from, and accept your mail
>
> i think there was a fairly long thread about dynamic DNS a week or so ago,
> you might want to check out the archives for more info.
>
> jason
>
> > The Facts:
> > Red Hat 7.1
> > sendmail-8.11.2-14
> > connected to my cable modem (outside interface)
> > connected to my small networks serving 1 pc (in case RR is listening)
> > (inside interface).
> >
> > My outside interface appears to NOT be able to resolve it's domain name.
> >  I think this is a RR wide thing.  Is anyone running RR able to get a
> > resolvable DNS name on the Roadrunner interface on the RR network?  If
> > so how?  For instance, the command (issued from my linux box at work)
> > 'dig paloverde.nc.rr.com' does not return an ip address.  Does
> > Roadrunner just not update DNS entries or simply not support DNS for
> > it's DHCP connected devices?
> >
> > My real question is this:
> >
> > Because my outside interface is not DNS resolvable some mail servers
> > will not accept mail send from my box, an example of this is my
> > employer, Lucent. Saturday, a day which I was not even in town, my mail
> > server attempted to send mail to my work address 6480 times!!!  And it's
> > been doing this every stinking day.
> >
> > Upon noticing this I freaked out, then stopped sendmail.  I looked in
> > /var/spool/mail and sure enough, there were references to lucent.com in
> > the three files in this directory.  I deleted every file in this
> > directory then restarted sendmail thinking this would stop the mail from
> > going out which had not already been delivered.
> >
> > No luck.  My machine is still attempting to mail lucent.com and the
> > files in /var/spool/mail are still empty.
> >
> > Any ideas on where to look to get rid of the files that is causing this?
> >
> > Here's an example of what is showing up in my maillog:
> > 4:03:18 paloverde sendmail[16406]: g95G0GT14652: to=gwbrown1 at lucent.com,
> > ctladdr=root (0/0), delay=16:03:02, xdelay=00:00:18, mailer=esmtp,
> > pri=86730161, relay=ihemail2.lucent.com. [192.11.222.163], dsn=4.0.0,
> > stat=Deferred: ihemail2.lucent.com.: No route to host
> >
> > Thanks!!!
> >
> > Greg
> >
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>
> ------------------------
> Jason Tower
> Cerient Technologies
> jason at cerient.net
>
>
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