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Distrubution list only working internally

I am running Microsoft Exchange 2007 with roles on one server.

I have created multiple Distrubution Lists for this domain before but now any new DL's I create only work internally.
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astasolutions
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astasolutions
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1 Solution
 
LegendZMPrincipal Security ArchitectCommented:
You have to make sure the exchange distirbution lists have an SMTP address that is real (@yourcompany.com) not @yourcompany.local)

Here is the KB on how to mail-enable distribution groups in Exchange 2007.
http://technet.microsoft.com/en-us/library/aa997448(EXCHG.80).aspx
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astasolutionsAuthor Commented:
Thanks LegenZM:
I have checked the 'Email Addresses' Tab and can see both @domain.com.au and @domain.local, the domain email address is in bold which I am assuming means it is the primary SMTP address.
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LegendZMPrincipal Security ArchitectCommented:
Just to confirm, the one that's bold is the domain.com.au, not domain.local.... right? (since you mentioned "domain email address is bold" and referred to both as domain, I just want to be sure. :P

The one that should be set to 'default' is the @domain.com.au

what happens currently if you e-mail the distributionlist@domain.com.au ? What kind of bounce back do you get? What does it say?
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astasolutionsAuthor Commented:
Sorry.
The Domain.com.au is in 'Bold'.

I dont receive any 'bounce back' if I send the email, and if I look within the 'Message Tracker' within the Exchange MMC I can see that the email goes through with Message Info: 00A:
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LegendZMPrincipal Security ArchitectCommented:
It sounds like one of your connectors is blocking external users from emailing it, maybe required authentication or something is on the send connector... I assume you followed the link in my first post?
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LegendZMPrincipal Security ArchitectCommented:
Do the old DL's still function correctly?
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LegendZMPrincipal Security ArchitectCommented:
Also, if service pack 1 is not installed, I would recommend installing it. http://www.microsoft.com/downloads/details.aspx?FamilyId=44C66AD6-F185-4A1D-A9AB-473C1188954C&displaylang=en
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astasolutionsAuthor Commented:
Yes I did follow your post. Thanks for that.

Service Pack 1 is installed.

We have two domains within Exchange eg. Example@test.com & example @test1.com

Test.com DL's are working externally fine but test1.com only works internally.

 
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LegendZMPrincipal Security ArchitectCommented:
Can anyone receive anything at @test1.com internal addresses? like if you sent something to username@test1.com ?

Have you verified MX records in DNS for test1.com, as well as making it authoritative for the domain?

read this: http://technet.microsoft.com/en-us/library/aa996314(EXCHG.80).aspx
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astasolutionsAuthor Commented:
Yes...users within the test1 domain can receive internally and externally.

MX records are fine as users can send/receive mail, and yes the domain is listed in 'Accepted Domains' and is type 'Authoritive'.
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astasolutionsAuthor Commented:
bump
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LegendZMPrincipal Security ArchitectCommented:
I'm out of ideas, from the way it sounds everything is configured properly.... And if your DL has a public SMTP address @yourdomain1or2.com and not @domain.local then it should work, I don't see why previous ones would work and new ones wouldn't.
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astasolutionsAuthor Commented:
Indeed it was authentication option under delivery restrictions. Soon as required authentication was unticked - it began to work so thank you Legend your suggestion pointed me in the right direction. Thanks to all who offered assistance! :)
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