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Posted to users@spamassassin.apache.org by Jt9373 <jo...@hotmail.com> on 2007/02/13 14:52:38 UTC

Re: [2] Sender domain must have a DNS MX

Hi Ron and Dan
I have the same issues.  Have you resolved this problem?  If you did, and
have a solutions, could you please help me out with it?
Thank you in advance
more detail below.

JT

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This is an automatically generated Delivery Status Notification.

Delivery to the following recipients failed.

       joetran@arcbridge.com




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Reporting-MTA: dns;bay0-omc3-s19.bay0.hotmail.com
Received-From-MTA: dns;hotmail.com
Arrival-Date: Tue, 13 Feb 2007 04:56:28 -0800

Final-Recipient: rfc822;joetran@arcbridge.com
Action: failed
Status: 5.2.1
Diagnostic-Code: smtp;550 5.2.1 Mailbox unavailable. Sender domain must have
a DNS MX or A/CNAME record.

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--9B095B5ADSN=_01C7313F958203D8005941F8bay0?omc3?s19.ba--




Ron-45 wrote:
> 
> I am getting the following as a bounced message when I send mail to
> this one person:
> 
> <xx...@tane-uma.de>: host tane-uma.de[81.169.136.73] said: 550 5.2.1
>     Mailbox unavailable. Sender domain must have a DNS MX or A/CNAME
> record.
>     (in reply to RCPT TO command)
> 
> I have never seen anything like this for any other email I send from
> the same server, and I am wondering if it is something I have set up
> wrong, or a problem on their end.  I assume this is a spam prevention
> technique.
> 
> I run several (virtual) domains off my one server, so if they are
> doing a reverse DNS lookup, it is not going to return the correct
> domain, but I know a lot of servers do this as well.    If this is
> indeed what they are doing, how can you set up a sever that hosts
> several domains off a single IP address to not fail this spam test?
> 
> The other thing that might be complicating this is that server1.net
> (1.2.3.1) hosts email for email1.net and email2.net.  But, when I send
> email for me@email1.net, server2.net (1.2.3.2) is the outgoing server.
>  I do this so I can just manage one severs that is relaying mail from
> client apps (thunderbird).   I don't think this is that abnormal, if
> not, how do I make it work correctly for this kind of spam detection?
> 
> Or is the receiving server just broken?
> 
> I apologize that this isn't a 100% spamassassin related question.
> 
> Ron
> 
> 

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