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undeliverable e-mail 5.1.0 error SBS 2003

Posted on 2008-10-28
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Last Modified: 2013-11-30
I am at a breaking point with this NDR message.  I am running a SBS 2003 with a smarthost configured.  I have certain e-mail addresses that I cannot send email to.  The error message I receive is below.  The strange thing is I can send a email from the server to this address with no problem, but other users on the network cannot send to this address.


The email address is shawn@cccsofc.com

The e-mail address could not be found.  Perhaps the recipient moved to a different e-mail organization, or there was a mistake in the address.  Check the address and try again.
            < isp.att.net #5.1.0 smtp; (Permanent Failure: Other address status)>

Any help at this point is welcomed.

Thanks

Shawn
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Question by:sc_pantherfan
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by:plug1
plug1 earned 100 total points
ID: 22822670
It sounds at first glance like a DNS problem, the error your getting doesnt appear to be coming from the SBS server but rather from your ISP. This tells me that the internal mail is being routed through the smarthost instead of being sent internally. Can I ask what your local active directory domain name is and also you external email domain? Are all the users affceted using the same email domain?
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by:sc_pantherfan
ID: 22822819
Local AD is intexpr.local
External is www.intexpr.com

All users seem to be affected by this.  They cannot send to a couple of different domains.

Thx

Shawn
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Expert Comment

by:plug1
ID: 22822854
I see, its external domains you cant send to? In that case in your DNS server I would change your DNS forwarders temporarily to opendns's DNS servers which are 208.67.222.222 and 208.67.220.220.

This will prove/disprove the DNS theory.
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Author Comment

by:sc_pantherfan
ID: 22823715
Changed ny DNS settings but I am still receiving this error message

 The e-mail system was unable to deliver the message, but did not report a specific reason.  Check the address and try again.  If it still fails, contact your system administrator.
            < isp.att.net #5.0.0 smtp; (Permanent Failure: Other undefined Status)>

Any other ideas????
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by:plug1
ID: 22823750
Where did you change them? the SMTP virtual server also has an option for overriding the Servers DNS settings? Have a check in there. TBH it has to be sopme kind of dns error?

If you run NSLookup on the server and type

set type=mx

Then enter the domain names of the failing addresses, does it resolve, and more importantly does it resolve correctly?
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Author Comment

by:sc_pantherfan
ID: 22826381
I changed the DNS settings on the forwarders in the DNS Manager.  I see a place in the SMTP virtual server on the advanced delivery tab that has a spot for smarthost.  There is nothing in there.  Do I need to plug in my smarthost IP here also?

Here are the results of my nslookup....everything looks fine.....

Default Server:  server.internationalexpress.local
Address:  192.168.1.5

> set type=mx
> ccsofc.com
Server:  server.internationalexpress.local
Address:  192.168.1.5

Non-authoritative answer:
ccsofc.com      MX preference = 0, mail exchanger = smtp.secureserver.net
ccsofc.com      MX preference = 10, mail exchanger = mailstore1.secureserver.net

> nssolutions.biz
Server:  server.internationalexpress.local
Address:  192.168.1.5

Non-authoritative answer:
nssolutions.biz MX preference = 0, mail exchanger = smtp.secureserver.net
nssolutions.biz MX preference = 10, mail exchanger = mailstore1.secureserver.net

Any other ideas??????????
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Author Comment

by:sc_pantherfan
ID: 22826629
More information:  This is really strange....If I send an email to the ccsofc.com or any of the domains in question and "request a delivery receipt" in Outlook the email goes through and does not get kicked back!

What is going on?  Wanted to also let you know that I am running Symantec Mail Information for Exchange.  Not sure if this has anything to do with it, but thought you should know.
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Author Comment

by:sc_pantherfan
ID: 22826737
Another update....I have one user that can send emails to the ccsofc.com domain if a delivery receipt is requested and I have a another user that cannot send email to this doamin.  The message gets kicked back to them from the system administrator with the same error message:

The e-mail address could not be found.  Perhaps the recipient moved to a different e-mail organization, or there was a mistake in the address.  Check the address and try again.
            < isp.att.net #5.1.0 smtp; (Permanent Failure: Other address status)>

Totally LOST!!!!!!!!!


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by:plug1
ID: 22827101
One question.. why do both of those domains resolve to the same MX records.. are they the same company?
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by:sc_pantherfan
ID: 22827127
No...they are different companies hosted by GoDaddy.
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Expert Comment

by:plug1
ID: 22827188
are these the only 2 companies you cant send to?

If so its worth calling go daddy's support I would say?
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Author Comment

by:sc_pantherfan
ID: 22827215
NO...I cant send to other companies as well as these two....did you see my previous posts.  Why can one user send to them and another can't?  Makes no sense...I have got to get this figured out!
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Expert Comment

by:plug1
ID: 22827250
I did read them but chose to ignore them lol, your right doesnt make sense..

I have to say when something makes not sense at all for me I start to suspect virus's, can you do a safe mode scan on some of the suspect machines to be sure?

.. Im in scotland by the way so I'll be in bed soon.. dont know where you are though..
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Author Comment

by:sc_pantherfan
ID: 22827307
Actually I just scanned all of the computers on the network 2 days ago with Windows One Care and it found a couple of virus' but I was able to remove them.  Scanned all computers again and they came up clean.  I am at a loss right now!

I am in South Carolina, US
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by:plug1
ID: 22828968
Right, I'll have a think about this one in work today and get back to you.
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by:sc_pantherfan
ID: 22854381
Any help out there....i am ready to throw this exchange server out the door.
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Author Comment

by:sc_pantherfan
ID: 22854445
Ok ...i think i have narrowed down the problem.  I have two Outlook 2007 clients and the rest are 2003 clients.  The two 2007 clients come up with a system undeliverbale message on the two domains in question.  The 2003 clients seem to be fine.

Any ideas????
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by:plug1
ID: 22854890
Downgrade them to 2003 to verify that its a SW problem..
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Author Comment

by:sc_pantherfan
ID: 22877412
Update...
I unistalled Office 2007 Basic last night on the two workstations in questions.  I re-installed Office 2003 Professional.  The two workstations that could not send email to the two domains in question can now send email to them with no problems.  What is the difference between 2003 to 2007?  Are there some security features in 2007 that need to be turned off?  Right now everything is working, but my client now has two copies of Office 2007 that they cannot use because of the Outlook 2007 email problem.

Thx

Shawn
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Author Comment

by:sc_pantherfan
ID: 22891370
DAMN DAMN DAMN......
Back to square one again!  After down grading the two users' workstations to 2003 they cannot send email to the two domains in question again!  Same error as before:  It worked for one day!

The e-mail address could not be found.  Perhaps the recipient moved to a different e-mail organization, or there was a mistake in the address.  Check the address and try again.

Other users on the Network can send mail to the domains in question with no problems.  I am at my breaking point!  What is going on?

PLEASE HELP!!!!

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Author Comment

by:sc_pantherfan
ID: 22891375
By the way I have a Smarthost setup on the exchange server with AT&T.
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by:sc_pantherfan
ID: 22894842
ANYBODY OUT THERE??????
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Accepted Solution

by:
sc_pantherfan earned 0 total points
ID: 22980985
FIXED!!!!  Setup mailhop forward with DYNDNS.  Upon setting that my IP was still blacklisted and the same two users could nto send email.  I formatted and re-install XP on the two users computers.  Problem solved.  IP has not been blacklisted in two weeks and mail is workign great!
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Author Comment

by:sc_pantherfan
ID: 22981007
fixed
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