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I have tested it and I know it is not an open relay, but we did just get the IP#. &nbsp;So somone before use could have be blacklisted. &nbsp;When I go to <a href="http://www.dnsstuff.com" rel="ugc">www.dnsstuff.com</a>&nbsp;and test it there I do not get any failures but there are a couple of sites that have minor DNS issues.
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I have tested it and I know it is not an open relay, but we did just get the IP#.  So somone before use could have be blacklisted.  When I go to www.dnsstuff.com [http://www.dnsstuff.com] and test it there I do not get any failures but there are a couple of sites that have minor DNS issues.

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I'd recommend running your IP thru a few RBL lists, here's one to try:<br />
<a href="http://rbls.org/" rel="ugc">http://rbls.org/</a><br />
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Also, you might consider posting a link to this question in the Exchange Server forum.
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I'd recommend running your IP thru a few RBL lists, here's one to try:
http://rbls.org/ [http://rbls.org/]

Also, you might consider posting a link to this question in the Exchange Server forum.

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I have a Windows 2003 SBS. &nbsp;I have a problem emailing one domain through the exchange server. &nbsp;I &nbsp;establish a SMTP session. &nbsp;When I enter the command rcpt to: followed by the email address, I get the following error ERROR:5.7.1:520 Mail accepted only via mx routing. All the mail to his domain is stuck in Queue. &nbsp;I have check my DNS setting and have done nslookup testing and I am able to resolve the mx record just fine. &nbsp;I have tried googling the error and had no luck finding an answer. &nbsp;I really appreciate some help with this for I have been fighting this for 2 days.<br />
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Thanks
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I have a Windows 2003 SBS.  I have a problem emailing one domain through the exchange server.  I  establish a SMTP session.  When I enter the command rcpt to: followed by the email address, I get the following error ERROR:5.7.1:520 Mail accepted only via mx routing. All the mail to his domain is stuck in Queue.  I have check my DNS setting and have done nslookup testing and I am able to resolve the mx record just fine.  I have tried googling the error and had no luck finding an answer.  I really appreciate some help with this for I have been fighting this for 2 days.

Thanks

SMTP error

Microsoft Outlook is a personal information manager from Microsoft, available as a part of the Microsoft Office suite. Although often used mainly as an email application, it also includes a calendar, task manager, contact manager, note-taker, journal, and web browser.