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<p style="margin-bottom: 0in">Hi,</p>
<p style="margin-bottom: 0in"><br>
</p>
<p style="margin-bottom: 0in">One of the Vhost on a server I run is a
shopping cart. We have been experiencing bounced emails when sending to Comcast. We do not have this problem with any other ISP.</p>
<p style="margin-bottom: 0in"><br>
</p>
<p style="margin-bottom: 0in">These emails are sent directly from the
box, such as the order confirmation email.</p>
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</p>
<p style="margin-bottom: 0in">The problem started when we upgraded
from CentOS 5.x to CentOS 6.x. I wonder if anyone else has
experience this problem.</p>
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</p>
<p style="margin-bottom: 0in">The failure message: <br><br>> Hi.
This is the qmail-send program at [boxes fully qualified domain
name]. <br>> I'm afraid I wasn't able to deliver your message to
the following <br>addresses. <br>> This is a permanent error; I've
given up. Sorry it didn't work out. <br>> <br>> <a href="mailto:MEUSTACE2@COMCAST.NET">[</a>customers
email address]: <br>> CNAME lookup failed temporarily. (#4.4.3)
I'm not going to try again; <br>> this message has been in the
queue too long. <br><br>Only happens when emails are sent to Comcast
directly from the server - order confirmation and shipping
confirmation. <br><br>I've search for a solution and read this can be
corrected by setting the DISABLE_CNAME_LOOKUP in qmail-remote. Something about a buffer being too small??<br></p>
<p style="margin-bottom: 0in"><br>
</p>
<p style="margin-bottom: 0in">Is this true or could it be another
issue?
</p>
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</p>
<p style="margin-bottom: 0in">Thank you for your feedback!</p>
<p style="margin-bottom: 0in"><br>Keith
</p>
<br><br><br>------------------------<br>
Keith Smith</td></tr></table>