To add on a litte. Exchange doesn't use GUIDs to find users. However once it has found a user, I have seen it use a GUID to go back to that user object to get more info, but it doesn't seem to hold that info for very long. I have never mentioned this before, but it can be fun to get out a network sniffer and watch the traffic to/from a DC/GC from an Exchange server. It is especially fun to watch say a RUS. For more fun crank up logging on the Exchange server for various pieces and try to mix and match the traffic to ops.
You can also crank up logging on the DC for inefficient queries and have it log all queries (See AD Cookbook) and take a peek at them. This will let you see the NSPI queries coming in from clients. joe -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Mulnick, Al Sent: Thursday, February 24, 2005 11:53 AM To: [email protected] Subject: RE: [ActiveDir] OT:(again)exchange address Exchange doesn't care about internal/external in that way. Exchange is SMTP based and follows the concept of authoritative for a domain or not. That's configured via Recipient Policies GUI typically. GUIDS to find users? I've never heard that and can't comment past saying that a user-object has a guid and an SMTP address as attributes. They are connected and could be used, but why? Homemdb (and several other attributes that must exist in order to qualify for mail receipt) would be more useful I would guess. As for addresses, Exchange has to do lookups for the SMTP addresses and then deliver the message. Since it's SMTP based and uses a centralized directory service, as mail comes in from external systems (external to Exchange) it MUST lookup the address either in cache or in the directory itself to be able to bring the transaction to resolution. That's where the 1:4 MHZ server to GC recommendation comes from; you'll knock over a GC in a high-volume environment if you're not careful. As for docs that explain internal routing, you can find those at http://www.microsoft.com/exchange/library and I would suggest the troubleshooting routing docs. Does that help? Al -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Kern, Tom Sent: Thursday, February 24, 2005 11:38 AM To: [email protected] Subject: RE: [ActiveDir] OT:(again)exchange address doesn't exchange use guids to find users? it can't associate a guid with a smtp address? or rather, how exactly does exchange tell if an address is in AD or out on the internet and how does it find the owner of said address(if in AD) under the hood? are there any docs you could point me to? thanks joe wrote: > Yep. I have seen it go a couple of ways at various times. > > User1 gets the email but User2 doesn't. > User2 gets the email but User1 doesn't. > Sometimes one way, sometimes the other. > Neither get it and an NDR is sent. > > Basically only one person gets the message or no one gets the message. > This is why I end up working on scripts to find duplicates. > :o) > > > joe > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Coleman, > Hunter Sent: Tuesday, February 01, 2005 11:27 AM > To: [email protected] > Subject: RE: [ActiveDir] OT:(again)exchange address > > Typically it will result in neither person getting the email, and the > sender will get and NDR. Addresses (primary and any secondaries) need > to be unique within the forest to prevent the delivery failure. > http://support.microsoft.com/default.aspx?scid=kb;en-us;258058 > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Kern, Tom > Sent: Tuesday, February 01, 2005 8:52 AM > To: ActiveDir (E-mail) > Subject: [ActiveDir] OT:(again)exchange address > > Hi, if i have 2 users with the same name in 2 different domains in a > win2k forest and both users have the other users' primary smtp address > as a secondary like so- [EMAIL PROTECTED] > [EMAIL PROTECTED] secondary > > [EMAIL PROTECTED] > [EMAIL PROTECTED] > > > will both users get each others mail? will exchange try to deliever to > both mailboxes based on the smtp address? when exchange gets a email > doesn't it just use that smtp address value to find the attribute and > user associated with it and then deliever the mail? or is a lot more > involved? > > thanks > 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/ 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/
