Not paging, but ranging. You are returning a single object that has a large number of values for a single attribute, it forces Exchange to handle the group in a special one-off way. I have done a lot of work around trying to figure out exactly what is happening and Exchange really does some "different" things when it has to do this. In fact, I even have a theory that once it needs to range it uses something other than the WLDAP32 library for the LDAP queries. I base this on the fact that Insight for AD which hooks the WLDAP32 calls doesn't see the ranging queries from Exchange but sees them from any other apps that range and also I see the traffic in a network trace captures and in Tracelogs.
I have an unvoiced theory also that breaking the DLs up into smaller sized can help when someone creates rules that have a condition of "from a DL" which forces an enumeration of the DLs and some of the nested DLs as well for every message to that mailbox. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Wednesday, September 21, 2005 11:04 PM To: [email protected] Subject: RE: [ActiveDir] OT: exchange max. dist. list size I saw this: "distribution list size in exchange?" and jumped on it. I should have thought about client side. On a related note, however, I don't believe that the problem of DL size in Exchange is on the Exchange side. Usually, where applications have had problems enumerating more than 1000 DL membership, the problem is most likely in the failure of that application to handle paging. Best practices, IMO, would dictate that whoever is writing an app that queries a DL should account for the possibility of the DL containing more than a 1000 object, and put in paging accordingly. I have used nested groups, but more for administrative/organizational/aesthetic purposes than to compensate for any Exchange-specific limitations. Sincerely, Dèjì Akómöláfé, MCSE+M MCSA+M MCP+I Microsoft MVP - Directory Services www.readymaids.com - we know IT www.akomolafe.com Do you now realize that Today is the Tomorrow you were worried about Yesterday? -anon ________________________________ From: [EMAIL PROTECTED] on behalf of joe Sent: Wed 9/21/2005 2:03 PM To: [email protected] Subject: RE: [ActiveDir] OT: exchange max. dist. list size Hey Deji... Remember the client side. :o) It is a personal DL and I believe 150-200 is the limit. As for Server DLs (i.e. AD Groups), MS recommends that you stick to sizes of 500-1000 and if you need to go above that to nest them. I would say that with AD 2003 I would go to 1500[1] but from what I have seen in how things work with the queries and other items that I can't go too deeply in now including rule expansion of "from a DL" rules I would also say that smaller DLs that are nested is probably the way to go. joe [1] The issue breaks down to how many members are returned prior to ranging kicking in. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Wednesday, September 21, 2005 3:40 PM To: [email protected] Subject: RE: [ActiveDir] OT: exchange max. dist. list size I don't have exact figures, but your numbers are unbelievably low. 200 max? I have DLs with 2300, and those are small. What gives you this impression? Are you using a tool that's barfing when expanding DLs with more than 200 membership? Sincerely, Dèjì Akómöláfé, MCSE+M MCSA+M MCP+I Microsoft MVP - Directory Services www.readymaids.com - we know IT www.akomolafe.com Do you now realize that Today is the Tomorrow you were worried about Yesterday? -anon ________________________________ From: [EMAIL PROTECTED] on behalf of [EMAIL PROTECTED] Sent: Wed 9/21/2005 8:23 AM To: [email protected] Subject: [ActiveDir] OT: exchange max. dist. list size Has anyone encountered the max distribution list size in exchange? Seems like it's 8KB, or between 100-200 email addresses? Am I missing something? Thanks, James List info : http://www.activedir.org/List.aspx List FAQ : http://www.activedir.org/ListFAQ.aspx List archive: http://www.mail-archive.com/activedir%40mail.activedir.org/ List info : http://www.activedir.org/List.aspx List FAQ : http://www.activedir.org/ListFAQ.aspx List archive: http://www.mail-archive.com/activedir%40mail.activedir.org/ List info : http://www.activedir.org/List.aspx List FAQ : http://www.activedir.org/ListFAQ.aspx List archive: http://www.mail-archive.com/activedir%40mail.activedir.org/ List info : http://www.activedir.org/List.aspx List FAQ : http://www.activedir.org/ListFAQ.aspx List archive: http://www.mail-archive.com/activedir%40mail.activedir.org/
