{Disarmed} Re: Domain of Sender does not exist

Derek Ragona derek at computinginnovations.com
Wed Sep 12 09:03:07 PDT 2007


At 10:52 AM 9/12/2007, brad davison wrote:
>We are using Sendmail.
>Sendmail version 8.13.8, config V10/Berkeley
>
>It is just odd that of our 17 domains we send/receive mail for.. only the 
>4 that are specified in our DNS are the ones having problems.
>
>The Domains are all listed in local-domain file.
>
>If there is something else i can check or put in my sendmail config, i'm 
>all ears.  It is configured for SMTP AUTH so its the check_rcpt that is 
>giving up the error.

Make sure they are in /etc/mail/local-host-names

         -Derek



>>From: Derek Ragona <derek at computinginnovations.com>
>>To: "brad davison" 
>><demonichandextensions at hotmail.com>,freebsd-questions at freebsd.org
>>Subject: Re: Domain of Sender does not exist
>>Date: Wed, 12 Sep 2007 09:27:51 -0500
>>
>>At 08:58 AM 9/12/2007, brad davison wrote:
>>>We have SMTP AUTH set up on our mail server.  Our mail server accepts 
>>>mail for several domains.
>>>x.com
>>>y.com
>>>z.com
>>>
>>>Outgoing messages from [user]@x.com, and [user]@y.com goes out fine, but 
>>>emails going out from [user]@z.com are getting:
>>>
>>>Domain of Sender does not exist ([user]@z.com] 5.1.8
>>>
>>>The oddest thing, is that this server is the MTA for z.com.  Sending to 
>>>[user]@z.com will end up on this box no problem.
>>>
>>>I did not set up our DNS, and it is in Active Directory.  In our DNS 
>>>"z.com" in the Forward Lookup Zone has A record for the email server, 
>>>and MX record for the email server.
>>>
>>>What could be hanging this up?  The x.com and y.com are not specified in 
>>>our DNS locally at all, so I am not sure how to model the DNS for these 
>>>domains.
>>>
>>>Also, when I 'paused' the z.com zone, I got the
>>>Domain of Sender does not resolve 4.1.8 error.
>>>
>>>Any leads on where my DNS or configs might be not able to resolve this 
>>>domain?
>>
>>What are you using to send mail?  If it is sendmail, sounds like a 
>>sendmail error.
>>
>>         -Derek
>>
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