Bug 22980

Summary:	Strange behaviour in domain name resolution!!
Product:	Base System	Reporter:	m.pizzi <m.pizzi>
Component:	misc	Assignee:	freebsd-bugs (Nobody) <bugs>
Status:	Closed FIXED
Severity:	Affects Only Me
Priority:	Normal
Version:	4.2-RELEASE
Hardware:	Any
OS:	Any

Description m.pizzi 2000-11-20 17:30:00 UTC

Hello,

There is a strange behaviour related to domain name resolution.
See this:
--
parigi# nslookup nw_milano.bgsdarcy.it
Server:  ginevra.net-one.it
Address:  212.177.116.30
 
Non-authoritative answer:
Name:    nw_milano.bgsdarcy.it
Address:  193.70.120.194
--
Now, look at this:
---
parigi# telnet nw_milano.bgsdarcy.it 25
nw_milano.bgsdarcy.it: Non-recoverable failure in name resolution
---

What????
This is very severe, because this machine is one of our smtp servers,
and many mails didn't started!
Please, help us.

How-To-Repeat: #nslookup nw_milano.bgsdarcy.it
#telnet nw_milano.bgsdarcy.it 25

Comment 1 Andre Albsmeier 2000-11-20 21:00:01 UTC

On Mon, 20-Nov-2000 at 09:28:53 -0800, m.pizzi@net-one.it wrote:
> 
> --
> parigi# nslookup nw_milano.bgsdarcy.it
> Server:  ginevra.net-one.it
> Address:  212.177.116.30
>  
> Non-authoritative answer:
> Name:    nw_milano.bgsdarcy.it
> Address:  193.70.120.194
> --
> Now, look at this:
> ---
> parigi# telnet nw_milano.bgsdarcy.it 25
> nw_milano.bgsdarcy.it: Non-recoverable failure in name resolution

Maybe removing the illegal underscore might help. You could use
a '-' instead of the '_'.

	-Andre

Comment 2 marcolin 2000-11-20 22:07:44 UTC

At 22.00 20/11/00 +0100, Andre Albsmeier wrote:
>On Mon, 20-Nov-2000 at 09:28:53 -0800, m.pizzi@net-one.it wrote:
> >
> > --
> > parigi# nslookup nw_milano.bgsdarcy.it
> > Server:  ginevra.net-one.it
> > Address:  212.177.116.30
> >
> > Non-authoritative answer:
> > Name:    nw_milano.bgsdarcy.it
> > Address:  193.70.120.194
> > --
> > Now, look at this:
> > ---
> > parigi# telnet nw_milano.bgsdarcy.it 25
> > nw_milano.bgsdarcy.it: Non-recoverable failure in name resolution
>
>Maybe removing the illegal underscore might help. You could use
>a '-' instead of the '_'.

But THAT is the real name of the server.
That is not my server.
Also, the name resolution doesn't fail on a Linux or a Solaris machine!

Thanks,

Marco.

Comment 3 Andre Albsmeier 2000-11-21 06:44:47 UTC

On Mon, 20-Nov-2000 at 23:07:44 +0100, Marco Pizzi wrote:
> At 22.00 20/11/00 +0100, Andre Albsmeier wrote:
> >On Mon, 20-Nov-2000 at 09:28:53 -0800, m.pizzi@net-one.it wrote:
> > >
> > > --
> > > parigi# nslookup nw_milano.bgsdarcy.it
> > > Server:  ginevra.net-one.it
> > > Address:  212.177.116.30
> > >
> > > Non-authoritative answer:
> > > Name:    nw_milano.bgsdarcy.it
> > > Address:  193.70.120.194
> > > --
> > > Now, look at this:
> > > ---
> > > parigi# telnet nw_milano.bgsdarcy.it 25
> > > nw_milano.bgsdarcy.it: Non-recoverable failure in name resolution
> >
> >Maybe removing the illegal underscore might help. You could use
> >a '-' instead of the '_'.
> 
> But THAT is the real name of the server.

Well, I didn't doubt that it is the real name. But the
name is illegal since it contains an underscore. I don't
know if this causes the problem.

> That is not my server.
> Also, the name resolution doesn't fail on a Linux or a Solaris machine!

That doesn't mean they are correct.

> 
> Thanks,
> 
> Marco.

	-Andre

Comment 4 Alfred Perlstein freebsd_committer

2000-11-30 20:26:50 UTC

State Changed
From-To: open->closed

We aren't responsible for resolving non RFC compliant DNS records, 
user should fix his DNS naming scheme