Limit for created user in Windows or Exchange 2003 Standard Servers?

pcmiracles used Ask the Experts™
Is there a limit for the number of users which you are allowed to create in Windows 2003 Active Directory or Exchange 2003 both of them are Standard Edition?  Also is there any limit for the number of contacts you can create in Active Directory?
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Theoretical limit that is five figures.
As for the number of contacts, as above. The limit isn't mailboxes but number of objects in the AD.
Although creating large number of contacts in AD is not always a good idea unless you are going to hide them.

Donnie4572IT Manager
No. No limit.
However, you will need a CAL (client access license) for each device/user that connects. But, these cal's are based on the honor system and there is no cut-off. You should maintain an accurate number of cal’s in case of audit.
no theoretical limits, but some practical ones.

standard edition exchange does not support clustering, it only supports a single storage group, 2 databases and 16gb per database, maximum 32gb of mail because of that.

enterprise edition exchange 2003 supports 4 storage groups, 5 databases per storage group and 16 terbyte per database limit. it also adds clustering support, which would be needed to actually use a mail server that busy.

server 2003 standard vs enterprise has similar hardware limits (ram, processors, etc) that have practical impact on what you do.

The structure of AD itself though, is the same.
Active Directory can scale to literally billions of objects; the only practical limitation are the cost of procuring CALs and the performance limitations of your server hardware.
i agree with laura as there is no limit in crearting the accounts but it is only the cost as laura said which matters in terms and for performance.. the reason you need is mainly for the audit purpose where you need to show them how many cal license you need..

Hope ths helps

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