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DNS issue, verify the settings with your ISP (mx, A and reverse)
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DNS issue, verify the settings with your ISP (mx, A and reverse)

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thanks, e-tream, we look after the dns through dns made easy, we have a c and mx records setup correctly. No PTR configured though, but as I say maybe this should be done by the isp as they control the reverse dns record.
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thanks, e-tream, we look after the dns through dns made easy, we have a c and mx records setup correctly. No PTR configured though, but as I say maybe this should be done by the isp as they control the reverse dns record.

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problem solved, so obvious, Cant believe I hadn't spotted that, ive been on this for hours.
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problem solved, so obvious, Cant believe I hadn't spotted that, ive been on this for hours.

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Sometimes the obvious gets missed. &nbsp;Glad it is sorted and thanks for the points.
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Sometimes the obvious gets missed.  Glad it is sorted and thanks for the points.

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<div class="content wysiwyg-content">
Hi experts<br />
<br />
Im getting the following error when sending to a few different domains<br />
<br />
#5.5.0 smtp;550 &lt;shop@betterfood.local&gt;: Sender address rejected: Domain not found<br />
<br />
Im running exchange on a sbs 2003 server. I have a reverse dns setup with the ISP<br />
<br />
I can email the problem domains from a differnt mail server with no issues. <br />
<br />
I can have a telnet conversion with the recipent mail server with no errors. &nbsp;<br />
<br />
The only thing ive not setup is a PTR record but im not sure how to do this. maybe this should be setup by the isp as they have setup the reverse dns record.<br />
<br />
Any suggestions are greatly appreciated.<br />
<br />
Thanks
</div>
</div>


Hi experts

Im getting the following error when sending to a few different domains

#5.5.0 smtp;550 <shop@betterfood.local>: Sender address rejected: Domain not found

Im running exchange on a sbs 2003 server. I have a reverse dns setup with the ISP

I can email the problem domains from a differnt mail server with no issues. 

I can have a telnet conversion with the recipent mail server with no errors.  

The only thing ive not setup is a PTR record but im not sure how to do this. maybe this should be setup by the isp as they have setup the reverse dns record.

Any suggestions are greatly appreciated.

Thanks

smtp error 550

Small Business Server (SBS) is a line of server operating systems targeted at small businesses by bundling the operating system with a number of other Microsoft products that would normally need to be purchased or licensed separately. The most notable inclusions are Exchange, SQL Server, SharePoint and ISA/TMG (Microsoft's firewall and proxy server).

Within Internet message handling services (MHS), a message transfer agent or mail transfer agent (MTA) or mail relay is software that transfers electronic mail messages from one computer to another using a client–server application architecture. A MTA implements both the client (sending) and server (receiving) portions of the Simple Mail Transfer Protocol (SMTP). The terms mail server, mail exchanger, and MX host may also refer to a computer performing the MTA function. The Domain Name System (DNS) associates a mail server to a domain with mail exchanger (MX) resource records containing the domain name of a host providing MTA services.

Email Servers

The Domain Name System (DNS) is a hierarchical, globally distributed system responsible for associating the name of a computer, service or other resource into an IP address for connecting to the Internet or a private network. Most prominently, it translates domain names to the numerical IP addresses needed for the purpose of computer services and devices worldwide.