Limit the number of user in a query-based distribution groups.

Hello,

Is it possible to limit the number of user in a query-based distribution
groups ?
For performance puropses, we want to use query-based distribution groups,
and we want to limit the query to 200 users to our GC.

Is this possible ?

thx

Howdie!

josé schrieb:
> Is it possible to limit the number of user in a query-based distribution
> groups ?
> For performance puropses, we want to use query-based distribution groups,
> and we want to limit the query to 200 users to our GC.

I don't think that you can limit the number of users in such a group.
How would that benefit you? I mean - if the query is setup to hit 1000
users and you get like random 200 - haven't you missed the goal then?

Seriuosly - have you tested how far the GC(s) will be hit by
implementing this? 200 users sounds like the near end of the performance
range a GC can handle over and over.

Cheers,
Florian
--
Microsoft MVP - Group Policy
eMail: prename [at] frickelsoft [dot] net.
blog: http://www.frickelsoft.net/blog.
Maillist (german): http://frickelsoft.net/cms/index.php?page=mailingliste

Hello, :)

Understood !

Last question: do QDBG can affect GC ?

I was thinking about admins that could create QBDG that queries thousand
users and that could affect my GC.

Thx for your help

"Florian Frommherz [MVP]" wrote:

> Howdie!
>
> josé schrieb:
> > Is it possible to limit the number of user in a query-based distribution
> > groups ?
> > For performance puropses, we want to use query-based distribution groups,
> > and we want to limit the query to 200 users to our GC.
>
> I don't think that you can limit the number of users in such a group.
> How would that benefit you? I mean - if the query is setup to hit 1000
> users and you get like random 200 - haven't you missed the goal then?
>
> Seriuosly - have you tested how far the GC(s) will be hit by
> implementing this? 200 users sounds like the near end of the performance
> range a GC can handle over and over.
>
> Cheers,
> Florian
> --
> Microsoft MVP - Group Policy
> eMail: prename [at] frickelsoft [dot] net.
> blog: http://www.frickelsoft.net/blog.
> Maillist (german): http://frickelsoft.net/cms/index.php?page=mailingliste
>

josé schrieb:
> Last question: do QDBG can affect GC ?
>
> I was thinking about admins that could create QBDG that queries thousand
> users and that could affect my GC.

Query-based distribution groups are _only_ executed at a GC as far as I
know. As soon as Exchange would notice that a mail recipient is a query
based distribution group, it would shoot the corresponding LDAP query to
a Global Catalog to expand it to recipients. So QBDCs affect a GCs
performance - you need to measure how much. I doubt this will be a big
deal unless you have multiple QBDCs with thousands of users each.

Cheers,
Florian
--
Microsoft MVP - Group Policy
eMail: prename [at] frickelsoft [dot] net.
blog: http://www.frickelsoft.net/blog.
Maillist (german): http://frickelsoft.net/cms/index.php?page=mailingliste

ok, i will test performance on one of my GC with QBDG.

thank you for your support.

"Florian Frommherz [MVP]" wrote:

> josé schrieb:
> > Last question: do QDBG can affect GC ?
> >
> > I was thinking about admins that could create QBDG that queries thousand
> > users and that could affect my GC.
>
> Query-based distribution groups are _only_ executed at a GC as far as I
> know. As soon as Exchange would notice that a mail recipient is a query
> based distribution group, it would shoot the corresponding LDAP query to
> a Global Catalog to expand it to recipients. So QBDCs affect a GCs
> performance - you need to measure how much. I doubt this will be a big
> deal unless you have multiple QBDCs with thousands of users each.
>
> Cheers,
> Florian
> --
> Microsoft MVP - Group Policy
> eMail: prename [at] frickelsoft [dot] net.
> blog: http://www.frickelsoft.net/blog.
> Maillist (german): http://frickelsoft.net/cms/index.php?page=mailingliste
>