Here are my results (Comments inter-sperced, Conclusion at the end):
########################################### Begin mail
Subject: Returned mail: Host unknown (Name server:
server1.rdcomputersolutions.net.: no data known)
Date: Sat, 4 Nov 2000 16:46:23 -0700
From: Mail Delivery Subsystem <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
The original message was received at Sat, 4 Nov 2000 16:46:22 -0700
from woodchuck.linif.org [192.168.1.2]
----- The following addresses had permanent fatal errors -----
<[EMAIL PROTECTED]>
----- Transcript of session follows -----
550 <[EMAIL PROTECTED]>... Host unknown (Name server:
server1.rdcomputersolutions.net.: no data known)
<SNIP>
########################################### End mail
Now here is what's interesting, your MX is set to
server1.rdcomputersolutions.net.
Let's look at what DNS has to say about that:
########################################### Start Results
[woody@woody woody]$ nslookup
Default Server: mikey.ida.net
Address: 204.228.203.1
> set querytupe=MX
> rdcomputersolutions.net
Server: mikey.ida.net
Address: 204.228.203.1
Non-authoritative answer:
rdcomputersolutions.net preference = 10, mail exchanger =
server1.rdcomputersolutions.net
Authoritative answers can be found from:
rdcomputersolutions.net nameserver = NS1.SCOTTSBORO.ORG
rdcomputersolutions.net nameserver = NS2.SCOTTSBORO.ORG
NS1.SCOTTSBORO.ORG internet address = 12.21.132.2
NS2.SCOTTSBORO.ORG internet address = 12.21.132.3
> exit
[woody@woody woody]$ nslookup server1.rdcomputersolutions.net
Server: mikey.ida.net
Address: 204.228.203.1
*** mikey.ida.net can't find server1.rdcomputersolutions.net:
Non-existent host/domain
[woody@woody woody]$
########################################### End Results
Usually the MX is set for mail.domain (mail.rdcomputersolutions.net in
your case)
Now notice what I found. (note: I was unable to traceroute or ping this
address
although I did successfully telnet to port 25 and 80 but there seemed to
be no
daemon(s) to accept my commands)
########################################### Start Results
[woody@woody woody]$ nslookup mail.rdcomputersolutions.net
Server: mikey.ida.net
Address: 204.228.203.1
Non-authoritative answer:
Name: mail.rdcomputersolutions.net
Address: 12.21.134.137
[woody@woody woody]$ ping mail.rdcomputersolutions.net
PING mail.rdcomputersolutions.net (12.21.134.137) from 204.228.204.18 :
56(84) bytes of data.
--- mail.rdcomputersolutions.net ping statistics ---
2 packets transmitted, 0 packets received, 100% packet loss
[woody@woody woody]$
########################################### End Results
Conclusion: Your ISP (whoever does your DNS for
rdcomputersolutions.net) needs to either
adjust your mail exchanger (MX entry) to mail.rdcomputersolutions.net
(assumes that is
your server) or set the correct IP in your domain's DNS for
server1.rdcomputersolutions.net.
Personnaly, I would ask that they use mail.rdcomputersolutions.net and
set it's IP to your
mail server as that's standard Internet convention. If your ISP says
it's setup correctly,
send them a copy of my results.
Enjoy,
Woody
rharvey wrote:
>
> I can send maill out from outlook thru my linux box all day.
> I can't have any one reply to me or send me a message direct to my
> domain.net address. ther error is generated.
> my provider says everything is setup right on his end to have the mail from
> my domain directed to my linux box ip.
> try sending a message to [EMAIL PROTECTED] and see what error
> you get.
> ps (i am a windows computer expert not linux. I am learning linux :) )
>
> thanks
> Robert
> ----- Original Message -----
> From: "Woody" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Saturday, November 04, 2000 4:14 PM
> Subject: Re: [expert] pop-3
>
> > Robert,
> >
> > Do not confuse POP-3 with SMTP. POP-3 is a way to RETRIEVE mail only.
> > When you send mail, you utilize SMTP. It sounds like the most likely
> > explanation is independent of all of the above though. Either your SMTP
> > options in your E-mail program are incorrect (i.e.: an invalid SMTP host)
> or
> > the DNS server (that the SMTP server you connect to to send mail) can not
> > correctly resolve the domain of your mail host that is the final delivery
> > point.
> >
> > The (traveling) life of an E-mail
> > -----------------------------
> > Sender's mail client sends mail (SMTP) to it's listed SMTP host.
> > The SMTP host then decides if the user is local:
> > Yes, Skip to Drop step
> > No, Pass mail on
> > Pass mail onto server that holds the desired recipient (again utilizing
> SMTP)
> > Drop mail into recipient's mailbox
> > Recipient checks for mail (POP-3)
> > -----------------------------
> >
> > As for on-demand POP-3, that is controlled by the inetd daemon. When a
> > request to the POP-3 port is received, inetd calls the POP-3 server
> program
> > which then processes the actual request (to retrieve user's mail). The
> same
> > goes for IMAP if you choose to *retrieve* your mail that way.
> >
> > Summary: your POP-3 settings on your server should not have anything to
> do
> > with your server's ability to receive mail. Look either at your sending
> > e-mail program's SMTP setting and/or check that your server's DNS entry is
> > current and correct.
> >
> > Enjoy,
> >
> > Woody ([EMAIL PROTECTED])
> >
> >
> > rharvey wrote:
> > >
> > > under service control in linuxconf
> > > pop-3 says it it enabled on demand
> > > I can send an email at from mydomain.net
> > > but when I try to send a reply back or I try to send a new mail to my
> > > domain.net it says Host unknown (Name server:
> > > server1.rdcomputersolutions.net.: host not found)
> > > does on demand cause this? if not what does?
> > > please help.
> > >
> > > thanks
> > > Robert
> > >
> >
--
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