[Okta Webinar] Learn how to a build a cloud-first strategyRegister Now

  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 680
  • Last Modified:

Trying to send mail to Exchange 2010/ SBS2011 server


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 []

   ----- 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!

  • 3
  • 2
1 Solution
Rob WilliamsCommented:
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.
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
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.
Rob WilliamsCommented:
Third Tier have bloged about creating SPF records for an SBS environment.

Featured Post

Problems using Powershell and Active Directory?

Managing Active Directory does not always have to be complicated.  If you are spending more time trying instead of doing, then it's time to look at something else. For nearly 20 years, AD admins around the world have used one tool for day-to-day AD management: Hyena. Discover why

  • 3
  • 2
Tackle projects and never again get stuck behind a technical roadblock.
Join Now