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Exchange 2003 Distribution Groups dont work after server migration

I have just migrated to Exchange 2003 Server to a new hardware, and for some reason my distribution groups are returning this error.


Your message did not reach some or all of the intended recipients.

      Subject:      ISU vs. Kent State tickets
      Sent:      8/9/2007 5:35 PM

The following recipient(s) cannot be reached:

      Remote Office on 8/9/2007 5:53 PM
            There was a SMTP communication problem with the recipient's email server.  Please contact your system administrator.
            <FQDN of new server#5.5.0 smtp;550 No such user - psmtp>
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mikerunkel
Asked:
mikerunkel
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1 Solution
 
ATIGCommented:
do you validate that everyone in the group has an mbx ?


how did you migrate to new hardware?
Does this only happen to groups or mbx as well?
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rakeshmiglaniCommented:
is it happening for new groups as well?
is this happening for all groups?
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MrLonandBCommented:
If you go to the group in AD Users and Computers, right-click and choose "Exchange Tasks" -- are you given the option to establish an email address?
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mikerunkelAuthor Commented:
I'm not sure what you mean my mbx? I migrated everything from the old server to the new server using the ESM.
I havent created any new groups yet. It is happening to all the existing groups.
When I do Exchange tasks it shows it already has an e-mail address. When I look under Exchange advanced it shows the Expansion server to be any server in the organization on some, and some of them show the old server name, and some of them show the new servername
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MrLonandBCommented:
By "mbx" -- he means "mailbox". Do all the users in the group have a mailbox?

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mikerunkelAuthor Commented:
Oh duh! yes all the users have mailboxes.
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rakeshmiglaniCommented:
the Expansion server should be set to any server in the organization for all the groups
You are getting the following NDR which does not appear to be from Exchange.
<FQDN of new server#5.5.0 smtp;550 No such user - psmtp>
How is your mail flow configured?
Have you tried to track the message that is sent to the group?


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ATIGCommented:
can you create a new group with 1 user and test ?

is the old server still running?
Did the rus, oab, etc... get moved to the new server?

What server is responsible for expansion?

how did you remove the old server?
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SembeeCommented:
Have you got a smart host configured on an SMTP Virtual Server somewhere?
This looks like you are trying to send email outside of the server. PSTMP is usually postini's SMTP server.

Simon.
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mikerunkelAuthor Commented:
Okay...I will try to create a new group and see. I copied/replicated all the rest of the roles, and system folders and that stuff to the new server. I still have the old server up and running. I am not familiar with expansion, what is that exactly?

I do have a smart host through Postini for all my outbound mail. I am using an SMTP Connector to send mail to that smarthost.
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mikerunkelAuthor Commented:
I created a new group, gave it an email, and I got an immediate response back that it didnt exist.

The e-mail account does not exist at the organization this message was sent to.  Check the e-mail address, or contact the recipient directly to find out the correct address.
            <FQDN #5.1.1>
When I look at the properties of the group it shows under Exchange advanced any server in the organization for Expansion server. Under e-mail addresses it shows the SMTP, CCMAIL,MS and X400 just like every other person/group.
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mikerunkelAuthor Commented:
Okay nevermind the last comment. I didnt wait long enough for RUS to kick in..
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rakeshmiglaniCommented:
so,is the new group working fine?
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mikerunkelAuthor Commented:
Yes the new group is working...just not the older ones.
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ATIGCommented:
And you have verified the old groups are mail enabled?

also go to the properties on the group and look for the expansion server, it be listed an any available unless you need to specify..

also validate the email address on the old group

next check a small group a validate you can send to each user in that group, then test to the group
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mikerunkelAuthor Commented:
Hmm...for some reason some of them started working again... I will verify on Monday whether or not its all of them. I haven't done anything else since, so I'm not sure what would have happened.
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mikerunkelAuthor Commented:
Everything is working great now. I wonder if there was some time in between that was needed to actualy move the remaining roles over to the new server.

Thanks!
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ATIGCommented:
somtimes AD just a bit slow to catch up :) glad everything is working
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