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Trying to create mydomain@mydomain.com email address (Exchange 2003/Windows Server 2003)

jclroolz asked

  This is the situation:

 I have a Windows 2003 Server, PDC of domain 'MYDOMAIN', Active Directory name 'mydomain.local'. I have Exchange 2003 on it as the mail server for internet 'mydomain.com' (apart from 'mydomain.local').

 'mydomain.com' is the default email address for Exchange. Everything works ok, except that it says I cannot create an email address 'mydomain@mydomain.com', it says the address is already created. I made some AD queries for all Exchange mailbxes and aliases, and none of them is 'mydomain', so I don't know where is that account/alias created. All other email accounts work just fine.

 It's important to me because I have had this account for ages in the other email server till we decided to migrate to Exchange.

 Any hints on where is that account and why wouldn't it let me create it?

 PS: of course, 'mydomain' is a ficticious name, change it or whatever you want, just putting it so that you understand my domain name is the same as the email account I want to create.
Watch Question

I am not sure what u are saying but if u are  saying u want to create an account name

alextrading@alextrading.com and u are not successfull it is because the netbios name
for alextrading.com=alextrading and as the message says it already exists and wont let
u add that name.

If u remember when u created ur domain and asked u to put ur domain in dcpromo when u enter lets say
alextrading.com on the next page window gave u a netbios name alextrading and that is the place u
could have changed it which most people dont.So if u have to have this name i think u have to reinstall
ur active directory.


I could use the domain renamer tool... but that's not quite the point, I'm not trying to create a "user" called 'mydomain', but an Exchange alias. i.e.: for my user 'jcl', i want to have an SMTP email address called 'mydomain@mydomain.com'.

At no point I told Exchange to create an account or alias called 'mydomain', or it is used as an alias anywhere else (you can easily check that making an Active Directory query for all exchange mailboxes/accounts and checking them all... it includes system created aliases/mailboxes). This has nothing to do with the domain controller (which is 'mydomain.local' in Active Directory, and not 'mydomain.com', that's only used as an external internet server in no way related to my network domain, other than the MX register in its DNS is pointing to the IP where the exchange server is).

I had done this correctly in Exchange 5.5 which was not integrated with Active Directory, and other mail servers.

Also, there is the fact that, if I actually send a mail to 'mydomain@mydomain.com' it's returned as unknown recipient, so the mailbox for that account is not actually created (be it system-created or user-assigned).

Once again, just noting the fact that the Active Directory domain/forest name is 'mydomain.local', and not 'mydomain.com'. NetBIOS name should not have anything to do here, and maybe 'mydomain@mydomain.local' is created, but having it created by default for the .com domain makes no sense to me (maybe it's just like that). Renaming the domain (although can be done with the domain renamer tool, no need to reinstall the domain) is kinda not an option... far too many things would have to be changed and I'd just prefer to change the address or something, but I don't want a workaround, as it _should_ not be needed. It's pretty much absurd that Exchange won't let you create a -so typical- mydomain@mydomain.com (example: microsoft@microsoft.com), and it's of no use to rename the domain (I'd rather rename the username).

Thank you for your comments though, I'm going to keep investigating and keep you informed... any other hints please post them here.


Ok, I got what the problem was. It was creating an email alias for a public folder (don't ask me why, it only happened to that one) called 'mydomain' (not sure why, there was no mailbox associated with it, that's why it wouldn't appear on the AD query). I just removed that email address and it worked flawlessly...

Thanks for your help guys,