Thanks Larry for the quick response, but no go. I edited the line in
sendmail.cf but it's not having any effect at dnsreport.com. It's giving
the same error, www.uhostme.com claims to be www.uhostme.net. Uhostme.net
apparently looks ok, it reports:
"OK: All of your mailservers have their host name in the greeting:
www.uhostme.net:
220 www.uhostme.net ESMTP Sendmail Ready; Sat, 13 May 2006 00:58:10
-0400 "
Uhostme.com must be putting www.uhostme.com on the first line and then
www.uhostme.net on the second. Uhostme.com is also giving an warning under
"Acceptance of domain literals",
"WARNING: One or more of your mailservers does not accept mail in the domain
literal format (user (at mark) [0.0.0.0]). Mailservers are technically required
RFC1123 5.2.17 to accept mail to domain literals for any of its IP
addresses. Not accepting domain literals can make it more difficult to test
your mailserver, and can prevent you from receiving E-mail from people
reporting problems with your mailserver. However, it is unlikely that any
problems will occur if the domain literals are not accepted (mailservers at
many common large domains have this problem).
www.uhostme.com's postmaster (at mark) [216.130.248.51] response:
>>> RCPT TO:<postmaster (at mark) [216.130.248.51]>
<<< 550 5.7.1 <postmaster (at mark) [216.130.248.51]>... Relaying denied"
Under uhostme.net, it reports all is fine...
-----Original Message-----
From: Larry Smith [mailto:lesmith (at mark) ecsis.net]
Sent: Friday, May 12, 2006 11:51 PM
To: coba-e (at mark) bluequartz.org
Subject: [coba-e:05143] Re: DNS Report Warning
On Friday 12 May 2006 21:17, Darrell D. Mobley wrote:
> On my BQ machine, I have it set up with the main site UHOSTME.NET using
the
> primary IP address 216.130.248.50. I have another site UHOSTME.COM set up
> using IP address 216.130.248.51. When I check UHOSTME.COM at
> DNSREPORT.COM, I get a warning that the mailserver at 216.130.248.51 is
not
> UHOSTME.COM, but is UHOSTME.NET, the main website. Apparently, it appears
> to me that the BQ machine assigns the main site name (and server's name)
to
> all of the IP addresses on the server. According to DNSREPORT.COM, this
is
> a technical violation of RFC821. Is this a cause for concern?
>
This was actually reported quite a while back and I thought had been "fixed"
(meaning the change put into the latest) but apparently it has not.
The problem is that the original sendmail.cf has the following:
#O SmtpGreetingMessage=$j Sendmail; $b
for the greeting message which is the primary interface name of the box.
It should have the following:
O SmtpGreetingMessage=$?{if_name}${if_name}$|$j$. Sendmail Ready; $b
which helos (greets) as the interface name that it was called on.
Change that line in your /etc/mail/sendmail.cf file and it will helo
correctly
and will not fail the dnsreports tests.
--
Larry Smith
SysAd ECSIS.NET
sysad (at mark) ecsis.net