On 04/20/2011 01:44 AM, [email protected] wrote:
Hi All,

We keep on receiving bounce back email when sending to specific client. Can 
someone help us identify what is causing the problem. Please see below sample 
bounce back email:

----- Original Message ----- From:<[email protected]>
To:<[email protected]>
Sent: Thursday, April 14, 2011 4:02 PM
Subject: failure notice


Hi. This is the qmail-send program at mail.altcladding.com.ph.
I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.

<[email protected]>:
User and password not set, continuing without authentication.
203.125.98.162 does not like recipient.
Remote host said: 450 Client host rejected: cannot find your hostname, 
[122.3.237.69]
Giving up on 203.125.98.162.
I'm not going to try again; this message has been in the queue too long.

<[email protected]>:
User and password not set, continuing without authentication.
203.125.98.162 does not like recipient.
Remote host said: 450 Client host rejected: cannot find your hostname, 
[122.3.237.69]
Giving up on 203.125.98.162.
I'm not going to try again; this message has been in the queue too long.


Regards,
Malvin

---------------------------------------------------------------------------------

$ host 122.3.237.69
69.237.3.122.in-addr.arpa domain name pointer 122.3.237.69.pldt.net.
$ host 122.3.237.69.pldt.net
Host 122.3.237.69.pldt.net not found: 3(NXDOMAIN)

I expect it's because the rDNS record for your IP address does not resolve. The ISP who provides the IP address should have a way to get that corrected for you.

--
-Eric 'shubes'


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