Re: [cobalt-users] mailrouting problem -> problem solved

[Luc Schiltz <becher@xxxxxx>]

ok here was the problem and here comes the solution :

Problem :
---------

RaQ3 named eisleck.web.lu tries to send mail to : Raq1 named dan.interpoint.lu
using a mailserver from the RaQ3 
(the 2 servers are on the same subnet)

all mail send from RaQ3 to any other emailaddress else than *@web.lu worked fine
every mail being sent from RaQ3 to RaQ1 to any address ending with @web.lu didn't
work

DNS was setup properly as well as Sendmail


Solution :
----------

as the RaQ3 was named : eisleck.web.lu and all mail being send to a mailaddress
ending with @web.lu didn't reach the pop account, I changed the name of the server
from eislek.web.lu to eisleck.webtechnologies.lu

I tried to resend all the mails to @web.lu and it worked ?!?!

don't ask me why it didn't work before but it seems to be working properly now ...

if anybody got a clue why it is working now , please let me know ...


Luc

thanks fly out to Jeff who tried to solve the problem too

> Luc Schiltz wrote:

>> >> $TTL 2H
>> >>
>> >> @       IN      SOA     ns1.interpoint.lu.
>> >> hostmaster.ns1.interpoint.lu.
>> >>
>> >> (
>>
>> > I've not done any tests to see if it makes a difference, but in my
>> > understanding, the open paren (in the last line I've quoted above)
>> > should follow "interpoint.lu." thusly:
>>
>> >   @       IN      SOA     ns1.interpoint.lu.
>> > hostmaster.ns1.interpoint.lu. (
>>
>> > instead of being on a line of it's own.
>>
>> this depends on your bind version running
>> just have a look at your named.log and check whether your nameserver
>> doesn't tell
>> you :
>>
>> Zone "domain.com" (file zone/domain.com): No default TTL set using SOA
>> minimum instead
>>
>> with $TTL 2H at the top of the zone file this is being corrected

> Still not sure what the placement of the parenthesis has to do with the
> "$TTL" line.

> According to documentation the "(" and ")" are to define a line that
> covers multiple physical lines.  So starting it on a line on it's own
> makes it a non-part of the SOA line.  However, I've not done any
> experimentation to see the effects, and I haven't got the time now; I
> just do it according to the documentation <smile>.

>> > Have you tried telneting into the RaQ1 from the RaQ3, on port 25, and
>> > entering the commands sendmail would send?
>>
>> e.g. which ones do you thick about ?

> So the purpose of the cobalt-users list is now to teach you how to
> administer Linux <smile>?

> If you telnet into port 25 and type the same commands that sendmail
> sends you'll see the replies sendmail gets.

> Here's a screen dump of a complete session I just used to send an email
> to <luc@xxxxxx>.  It seems to have worked.

> Note in the email I sent you, since I was using telnet, I couldn't
> correct errors in my email as I went, so it may be hard to understand
> what I was trying to say; I'll explain below what I did, what you should
> look for and what the results might mean...

> Here's what I did (my explanations of what I did are preceeded by
> ">>>>>"; the rest is a screen dump of the actual telnet session):

>>>>>>first I got the MX for web.lu to make sure I was sending
>>>>>>the email to the right place...

> [admin admin]$ nslookup
> Default Server:  ns1.ns-one.net
> Address:  209.126.152.18

>> set querytype=MX
>> web.lu
> Server:  ns1.ns-one.net
> Address:  209.126.152.18

> web.lu  preference = 10, mail exchanger = web.lu
> web.lu  preference = 20, mail exchanger = relay.web.lu
> web.lu  nameserver = ns1.interpoint.lu
> web.lu  nameserver = dns.kpnbelgium.be
> web.lu  internet address = 195.95.123.15
> relay.web.lu    internet address = 195.95.123.15
> ns1.interpoint.lu       internet address = 195.95.123.3
>> exit
> [admin admin]$

>>>>>>Okay, now I know that mail for <luc@xxxxxx> should go
>>>>>>sendmail running at "web.lu".

>>>>>>Note that the following session runs over 80 columns many
>>>>>>times; rather than attempt to try to break lines intelligently
>>>>>>for every mail-reader out there, I'll just let my email
>>>>>>program wrap the lines in the cut and paste I'm sending
>>>>>>you.

> [admin admin]$ telnet web.lu 25
> Trying 195.95.123.15...
> Connected to web.lu.
> Escape character is '^]'.
> 220 dan.interpoint.lu ESMTP Sendmail 8.8.8/8.8.8; Sun, 14 May 2000
> 16:37:52 +0200
> EHLO mail.nobaloney.net
> 250-dan.interpoint.lu Hello car01.nobaloney.net [209.126.128.251],
> pleased to meet you
> 250-8BITMIME
> 250-SIZE
> 250-DSN
> 250-ONEX
> 250-ETRN
> 250-XUSR
> 250 HELP
> MAIL FROM: <jlasman@xxxxxxxxxxxxx>
> 250 <jlasman@xxxxxxxxxxxxx>... Sender ok
> RCPT TO: <luc@xxxxxx>
> 250 <luc@xxxxxx>... Recipient ok
> DATA
> 354 Enter mail, end with "." on a line by itself
> Luc,

> This is a test email I'm sending you directly from Sendmail.
> (That should say "Directly from Telnet"; I can't fix a typo
> when using telnet to send email <frown>.)

> I'll also send a reply to you personally and onlist explaining
> how I did it.

> Then you should check your logs to see if "web.lu" received
> this email or not. (that should say received it properly or
> not). Since it is receiving the email, if it's not in the logs
> your problem is with the system at web.lu; the mail is not
> getting to your pop box. (that should say the sendmail program
> is not handling the mail properly). If this email is in the
> mail log at web.lu, then your sending computer never sent the
> email properly.

> Jeff
>  .
> 250 QAA18642 Message accepted for delivery
> QUIT
> 221 dan.interpoint.lu closing connection
> Connection closed by foreign host.
> [admin admin]$

>>>>>>that's the end.

> Now what this means is simple.  My copy of sendmail can send an email to
> <luc@xxxxxx> just fine.

> And your copy of sendmail tells me it's received it.

> If it is in your logs, but you didn't get it, then somehow sendmail
> isn't passing off the email to your pop daemon.

> If it's not in your logs, then your sendmail isn't working properly.

> If it is in your logs and you did get it, then the machine you're using
> to send the email to <luc@xxxxxx> isn't working properly.

> Everyone:  save this example for future reference; I don't want to take
> the time to do it again <smile>.

> Jeff
> --
> Jeff Lasman <jblists@xxxxxxxxxxxxx>
> nobaloney.net
> P. O. Box 52672
> Riverside, CA  92517
> voice: (909) 787-8589  *  fax: (909) 782-0205

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