Problems with mail server?

Tim356 · 05-26-2006, 09:22 PM

Hi there,

I recently purchased a VPS to host some of my websites. The host configured the VPS for me, and all was going great for about a week. However, in the last 24 hours, mail has stopped working. When I send an email from an external email address to one of my email addresses setup on the VPS, I get this message:

Quote:

This is an automatically generated Delivery Status Notification

Delivery to the following recipient failed permanently:

recipient-email-address@internal-domain.com

Technical details of permanent failure:
PERM_FAILURE: SMTP Error (state 9): 550-Verification failed for <sender-email-address@external-domain.com>
550-unrouteable mail domain "external-domain.com"
550 Sender verify failed

----- Original message -----

Received: by 10.70.68.2 with SMTP id q2mr23032wxa;
Fri, 26 May 2006 19:13:49 -0700 (PDT)
Received: by 10.70.57.2 with HTTP; Fri, 26 May 2006 19:13:49 -0700 (PDT)
Message-ID: <63d98d010605261913w2095f47ctd0f89bdb1a43e995@mail.external-domain.com>
Date: Sat, 27 May 2006 12:13:49 +1000
From: "Name of sender" <sender-email-address@external-domain.com>
To: "Name of recipient" <recipient-email-address@internal-domain.com>
Subject: test
MIME-Version: 1.0
Content-Type: multipart/alternative;
boundary="----=_Part_137_14517455.1148696029633"

------=_Part_137_14517455.1148696029633
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

test

------=_Part_137_14517455.1148696029633
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit

----- Message truncated -----

Of course I've changed the email addresses, but you can see the messgae I get.

I've tried restarting exim, and the pop3 service, but still have this problem. When I check the service status within cpanel, everything is showing as running fine.

Can somebody help? I have users calling me every 5 seconds complaining about not getting/be able to send mail.

Thanks,
Tim.

Tim356 · 05-27-2006, 05:43 AM

Anyone got any ideas?

scheidel21 · 05-31-2006, 09:37 PM

It looks like exim is trying to verify the sending domain and it is unable to do so, causing the mail not to be sent, check your allowed mail domains in Exim's settings.

Alex

scheidel21 · 05-31-2006, 09:38 PM

Also check your DNS settings because you are trying to send to an internal domain

Tim356 · 06-01-2006, 02:35 AM

So how do I do that?

scheidel21 · 06-02-2006, 06:16 PM

Almost all your settings are in the /etc directory. However, if you are using debian I believe you can run dpkg exim or something along those lines will run the debian exim setup. As for checking DNS settings I don't know how you had it set up but you could try running dig internaldomain and or dig externaldomain and see what you get. It will probably produce an error on the internaldomain unless you are running DNS for your internal domain.

It may also be where you are sending it from and the user you are sending as. But I'm afraid off the top of my head and not knowing what distro you are using or exim version you are using I cannot give you much more detail

Alex