DNS Bounce Back

[stuart@chittys.net]

CAn any body shed any light as Tech support seem unable to solve this problem after a week. I am getting a number of email bounce backs as per the error message below. We have tried DNS changes Nameserver changes all to no avail. This seems limited to specific Doamins and a lot of emails still send. I have put below the error message and the DNS MX log I did.

Diagnostic information for administrators:

Generating server: hub02.ad2.softcom.biz

louis.scales@choice-services.co.uk
xsmtp06.mail2web.com #550-Destination 83.170.81.160 said: 550-Verification failed for 550-<stuart@chittys.net> 550-550-Unrouteable address 550 550 Sender verify failed ##

Original message headers:

Received: from MBX75.ad2.softcom.biz ([10.5.13.36]) by hub02.ad2.softcom.biz
([10.5.31.8]) with mapi; Thu, 5 Nov 2009 16:32:09 -0500
From: Stuart Chitty <stuart@chittys.net>
To: "louis.scales@choice-services.co.uk" <louis.scales@choice-services.co.uk>
Date: Thu, 5 Nov 2009 16:32:09 -0500
Subject: test
Thread-Topic: test
Thread-Index: AQHKXl9uvHyoDgcyjEe10TzioDW9Kw==
Message-ID: <0C8F1992DB4B144189B433B1DDF6230B1938FB411E@MBX75. ad2.softcom.biz>
Accept-Language: en-US
Content-Language: en-GB
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
acceptlanguage: en-US
Content-Type: multipart/alternative;
boundary="_000_0C8F1992DB4B144189B433B1DDF6230B193 8FB411EMBX75ad2softc_"
MIME-Version: 1.0


Below is the MX report as an attachment
Mail server information
MX

Server
Time To Live
Priority

ex7.chittys.net
3600
10





Category: MX
Status:
Test name:
Details:



Reverse resource
records (PTR)
At least one nameserver is missing a reverse resource record.

Email Server
Reverse Resource Records

ex7.chittys.net
ex7.mail2web.com






Test email
the servers
All email servers are responding and seem to accept email for the administrative address postmaster@chittys.net



Legend
WARNING

The test found something that might indicate a problem. It does not generally require immediate action, but an investigation of the cause for the warning is still recommended.


PASS

No problems found.


FAIL

The test failed. It is recommended that the cause for the problem is identified and fixed as soon as possible.








Many thanks for your help in advance

[birge]

Hi,
I'll forwarded your question to our technical team!
Regards,

[BigTimeHockeyMom]

What usually causes email bouncebacks, anyway?

[suwunk]

If the recipient's server has predetermined that it is not accepting e-mails from the sender's address (for example, if it has blocked the address for anti-spamming purposes), the server will reject the message and it will subsequently bounce back to the sender.

The message will also bounce back to the server if the mail server on the recipient's end is busy and cannot handle the request at that time.