Mark, Paul, This GC issue got me all confused also and that is why i posted question about demoting DC with Exchange running on it and being second GC in Same IP subnet. I actualy had some issues with having 2 GC in same site. Since i don't have multiple domains or sites... Issue that i had was information not being replicated between GC's, DNS ( AD integrated) not seing another dns and as follows replication erros whan you try to force it. I guess the confusion comes from reading too many books! :) Erly 2000 MCSE books, like Sybex kept telling us that you can only have 1 GC per IP site or child domain, "there could be only ONE"... and next thing, i am getting a book from MS Press for Exchange 2000 and Clustering Service Books and they all talking about having more GC's!!! Cluster heavily relies on GC for authentication! So we did select cesond DC in site as GC also and that is were all hell broke lose!... after about a week or so. I got to look up which books this was mentioned at... -----Original Message----- From: Mark Fugatt [mailto:mark@xxxxxxxxx] Sent: Sat 7/19/2003 8:02 AM To: [ExchangeList] Cc: Subject: [exchangelist] RE: Demoting Win2000 server with Exchange 2000 http://www.MSExchange.org/ Paul There is no limit to the number of GC's per AD site or per subnet, where did you hear that it was only possible to have one? Like you said, having to many on the other hand could cause a lot of GC replication. Mark Fugatt MCT, MCSE, Microsoft Exchange MVP Pentech Office Solutions Inc Tel: 585 586 3890 Cell: 585 576 4750 Fax: 585 249 0316 www.4mcts.com www.exchangetrainer.com -----Original Message----- From: paul_lemonidis@xxxxxxxxxxx [mailto:paul_lemonidis@xxxxxxxxxxx] Sent: Saturday, July 19, 2003 7:12 AM To: [ExchangeList] http://www.MSExchange.org/ Hi All One question if I may just butt in just a second please. Only one GC per site? I have been running two on our single site of about 50 machines for several months without error. If I had a user location with say 180 users and a total of 225 machines and all on one IP subnet I would certainly want more than one GC? Are we talking AD Sites or IP Subnets as sites? I assume the former in which case I have another question. Whilst creating Sites is recommended it is not compulsory and whilst AD may not work as well without them it isn't a prerequisite as I understand so what is the problem with multiple GC's' per Site? I do appreciate that too many GC's overall can be just as bad as to few.but one per Site seems low to me? Many thanks in advance. Regards, Paul Lemoidis. ----- Original Message ----- From: "John Tolmachoff (Lists)" <johnlist@xxxxxxxxxxxxxxxxxxx> To: "[ExchangeList]" <exchangelist@xxxxxxxxxxxxx> Cc: "'[ExchangeList]'" <exchangelist@xxxxxxxxxxxxx> Sent: Friday, July 18, 2003 11:08 PM Subject: [exchangelist] RE: Demoting Win2000 server with Exchange 2000 > http://www.MSExchange.org/ > > > I tryed to send you the screenshot of my settings, but i guess it's > > bigger them what allowed. Here is what my settings read: > > Yes, I got the attachment. > > > MAIL is my email server on secondary DC. Rome was the first DC for > > domain. I installed secondary DC for the same site and later loaded > > Exchange on it. > > My point was that MAIL does not have ROME as a DC in Domain access, only as > a GC. > > > The reason i raised some concerns about MAIL having incorrect settings, > > because when i created accounts in Rome, they didn't replicate to MAIL > > and backwards. I also installed second DNS on MAIL and it was also > > acting goofy. I would see the copy of first DNS, but this would act like > > it needs to be setup.... > > Red Flag on play! > > I bet this a DNS issue. > > AD absolutely requires properly configure domain wide DNS zones. > > Do you see the srv records in the DNS AD Domain zone? > > Do you have a root zone? > > Are the zones AD Integrated mode? > > > This made me look into my domain configurations. I checked AD Sites and > > Services and knowticed that someone made MAIL a GC also. So i had 2 GC > > and AD was getting confised. I unchecked the GC checkbox for MAIL and > > now i only have ROME as a CG. > > OK > > > Reason for demoting this MAIL server is to clear all the AD settings i > > have on that server and clear ROME AD. I do want to promote it back to > > DC later on again, but at least i would know that everything is correct. > > No one else would mess with the servers again! :) > > Lets get DNS checked first. > > John Tolmachoff MCSE CSSA > Engineer/Consultant > eServices For You > www.eservicesforyou.com > > > > ------------------------------------------------------ > List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist > Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp > Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ > ------------------------------------------------------ > Other Internet Software Marketing Sites: > Leading Network Software Directory: http://www.serverfiles.com > No.1 ISA Server Resource Site: http://www.isaserver.org > Windows Security Resource Site: http://www.windowsecurity.com/ > Network Security Library: http://www.secinf.net/ > Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com > ------------------------------------------------------ > You are currently subscribed to this MSExchange.org Discussion List as: paul_lemonidis@xxxxxxxxxxx > To unsubscribe send a blank email to leave-exchangelist-1618106O@xxxxxxxxxxxxx > ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: Leading Network Software Directory: http://www.serverfiles.com No.1 ISA Server Resource Site: http://www.isaserver.org Windows Security Resource Site: http://www.windowsecurity.com/ Network Security Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: mark@xxxxxxxxx To unsubscribe send a blank email to leave-exchangelist-1618106O@xxxxxxxxxxxxx ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: Leading Network Software Directory: http://www.serverfiles.com No.1 ISA Server Resource Site: http://www.isaserver.org Windows Security Resource Site: http://www.windowsecurity.com/ Network Security Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: vadim@xxxxxxxxxxxxxxxxxxx To unsubscribe send a blank email to leave-exchangelist-1618106O@xxxxxxxxxxxxx