Thanks Eric... I'll give it a look  and see if I can find this.

On Thu, Jun 24, 2010 at 11:43 PM, Eric Shubert <e...@shubes.net> wrote:

> Richard Baxant wrote:
>
>> I have an external ip address that goes through my router (hardware
>> firewall) to my webserver box (192.168.x.1) and my qmailtoaster box
>> (192.168.x.2). I can send and receive email through my qmailtoaster box
>> without any issues. The problem is when I try to send mail form my webserver
>> box and I get the error: <<< 511 sorry, can't find a valid MX for sender
>> domain (#5.1.1 - chkuser)
>> 554 5.0.0 Service unavailable. What am I missing here?
>>
>
> The problem is your webserver box's configuration. I usually use postfix on
> such hosts, and configure it to send to the QMT host with authentication.
> Check the list archive for postfix configuration notes. I believe I posted
> them not too long ago.
>
> --
> -Eric 'shubes'
>
>
>
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