i have a "dynamic distribution group" while sending email to this group i am getting a lot of delay in sending emails. PFA is the screeshot of the error that i send while sending email to the group, Please help PFA - screeshot of the error --- hope this helps http://img248.imageshack.us/img248/7498/exchnagedl.jpg

How many member does the group have? What is the organization config? If the group is really big and the mailflow in the organization is pretty intensive you may want to explicitly set one of the HUB servers as the expansion server.MCITP: EMA 2007/2010 | MCSA | Blog http://ehlo.me

On Fri, 9 Jul 2010 06:54:23 +0000, Deep_IT wrote: > > >i have a "dynamic distribution group" > > > >while sending email to this group i am getting a lot of delay in sending emails. PFA is the screeshot of the error that i send while sending email to the group, What's the selection criteria for the DDL? How large is the AD forest (i.e. how many mail- and mailbox-enabled objects does it contain)? Does the selection criteria also include static groups that must be expanded? Are the selection criteria using only properties that are indexed, thus avoiding the need to examine every object in the scope? --- Rich Matheisen MCSE+I, Exchange MVP --- Rich Matheisen MCSE+I, Exchange MVP

this "dynamic distribution group" will send email to the entire domain ... approx 1500 users and DL as-well

On Sun, 11 Jul 2010 15:53:15 +0000, Deep_IT wrote: >this "dynamic distribution group" will send email to the entire domain ... approx 1500 users and DL as-well 1500 mail- and mailbox-enabled users isn't very many. I'd guess that your inclusion of other DLs (which may have other DLs as members) is probably the reason things take longer. Each of those DLs has to be expanded. You're probably also sending lots more e-mail than you intend to since each of the members of those DLs will get multiple copies of the message. You can see that duplication in the Exchange 2007/2010 message tracking logs (they appear as duplicate deliveries). I don't remember E2K3 having that same feature. Is there a reason you include Distribution Groups in that DDL? --- Rich Matheisen MCSE+I, Exchange MVP --- Rich Matheisen MCSE+I, Exchange MVP

the only option i have selected under the filter tab is "User with Exchange Mailboxes' ... so i donot have mail enabled groups or anything else selected

On Mon, 12 Jul 2010 11:50:18 +0000, Deep_IT wrote: >the only option i have selected under the filter tab is "User with Exchange Mailboxes' ... so i donot have mail enabled groups or anything else selected So, let's start by you telling me what that screenshot is you posted? The one with all the 250 2.1.5 RESOLVER.GRP.Expanded items in it. Is there more information on each line, like the name of the group that's expanded? --- Rich Matheisen MCSE+I, Exchange MVP --- Rich Matheisen MCSE+I, Exchange MVP

i dont have anything to expand there ... no group name mentioned .... how can we check which groups is it trying to expand ...