Problems sending emails

[adamlevoi]

Hi,

Recently started using scalix on FC4 with multiple email domains. domain 1 was working fine (sending & recieving) on webmail and Outlook connect, we used this domain to get the whole system up and running then imported pst into users mailboxes and all worked fine.

I was then happy to move the mx record for domain 2 over to the new scalix server since this has been done i have recieved all messages for all users but only been able to send mail to other scalix users and one other person, the usual testers hotmail, gmail & yahoo were tested but result in non delivery and an error back to the user.

**********************************************
** THIS IS A WARNING MESSAGE ONLY **
** YOU DO NOT NEED TO RESEND YOUR MESSAGE **
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The original message was received at Fri, 19 May 2006 09:36:43 +0100 from localhost.localdomain [127.0.0.1]

----- Transcript of session follows ----- <col*******tsa@yahoo.co.uk>... Deferred: Connection timed out with yahoo.co.uk.
Warning: message still undelivered after 4 hours Will keep trying until message is 5 days old

Any help will be really appriciated

Thanks in advance
Adam

[ScalixSupport]

Hi Adam,

On your Scalix server type:

Code: Select all

nslookup


then at the > prompt, type:

Code: Select all

set type=mx
yahoo.co.uk


and you should see something like:

Code: Select all

Non-authoritative answer:
yahoo.co.uk     mail exchanger = 10 mx1.mail.ukl.yahoo.com.
yahoo.co.uk     mail exchanger = 20 mx2.mail.ukl.yahoo.com.

If that works, then type:

Code: Select all

telnet mx1.mail.ukl.yahoo.com 25


and you should see something like:

Code: Select all

Trying 195.50.106.7...
Connected to mxa.mail.ukl.yahoo.com (195.50.106.7).
Escape character is '^]'.
220 mta130.mail.ukl.yahoo.com ESMTP YSmtp service ready


If you get a failure on any of the steps above, post the results here.

Thanks,
Rachel

[adamlevoi]

Thanks for you help. Heres the results

> [root@mailserver ~]# nslookup
> set type=mx
> yahoo.co.uk
Server: 10.0.0.138
Address: 10.0.0.138#53

Non-authoritative answer:
*** Can't find yahoo.co.uk: No answer

Authoritative answers can be found from:
>

And the 2nd Part

[root@mailserver ~]# telnet mx1.mail.ukl.yahoo.com 25
Trying 195.50.106.7...
Connected to mx1.mail.ukl.yahoo.com (195.50.106.7).
Escape character is '^]'.
220 mta122.mail.ukl.yahoo.com ESMTP YSmtp service ready

421 Service not available, closing transmission channel.
Connection closed by foreign host.
[root@mailserver ~]#

Thanks in advance
Adam

[ScalixSupport]

Hi Adam,

So the first part (DNS) is where the problem lies. Either your DNS isn't configured properly or the DNS server you're using isn't configured properly. Check your /etc/resolv.conf file and make sure you have the correct DNS servers listed. Right now you have 10.0.0.138 configured, but that server doesn't seem to be able to find yahoo.co.uk.

Thanks,
Rachel

[adamlevoi]

Thanks for your help, that now does the nslookup part correctly but still does not deliver mail for domain 2 (our main domain)

I think it is getting close however as i changed one of the accounts to domain 1 this account can then send mail to a hotmail address.

So i am not sure exactly what the problem is but there must be some setup that we did earlier for domain1 which i have not done for the other domain. Would you have any idea what this could be.

Kind Regards
Adam