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Trying to send mail to Exchange 2010/ SBS2011 server

Hello,

I have Exchange working correctly for domain.net  I added a new e-mail address (username@sub.otherdomain.biz) to one of the exisiting users.  At the registrar, I have the domain name sub.otherdomain.biz pointing to my server.  The error I am getting is:

The original message was received at Thu, 6 Sep 2012 12:40:16 -0400 from mail.networksolutionsemail.com [205.178.146.50]

   ----- The following addresses had permanent fatal errors ----- <username@sub.otherdomain.biz>
    (reason: 550 5.7.1 Unable to relay)

   ----- Transcript of session follows ----- ... while talking to remote.domain.net.:
>>> DATA
<<< 550 5.7.1 Unable to relay
550 5.1.1 <username@sub.otherdomain.biz>... User unknown <<< 503 5.5.2 Need rcpt command


Do I need to add sub.otherdomain.biz to my SAN Cert?

By the way, username@domain.net is receiving mail.

Thanks in advance for your help!

Don
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gemccllc
Asked:
gemccllc
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1 Solution
 
Rob WilliamsCommented:
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gemccllcAuthor Commented:
Do you mean e-mail addresses with subdomains or subdomains in general?  If the latter, isn't remote., autodiscover. subdomains?

Thanks in advance for your response.
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Rob WilliamsCommented:
subdomains in general.

Keep in mind remote.domain.com is not using a sub-domain, it is a FQDN or host record., though some ISP's seems to refer to them as subdomains.

remote.sub.domain.com  would be the FQDN of a subdomain.

Having said that it is possible to recive mail, as per the link, for  domain.com  and otherdomain.com
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gemccllcAuthor Commented:
OK, I got one working except when I go to testexchangeconnectivity.com to test outbound SMTP, it is saying:

Attempting to find the SPF record using a DNS TEXT record query.
ExRCA wasn't able to find the SPF record.
Additional Details
No records were found.

Under which domain name do I place the record?  What exactly should it say?

Thanks again.
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Rob WilliamsCommented:
Third Tier have bloged about creating SPF records for an SBS environment.
http://www.thirdtier.net/2012/03/need-to-make-an-spf-record/
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