Hi I am new Admin at this compayn, i found Exchange server 2007 is installed on DC and Also blackberry Professional software is also installed on top of Exchange 2007. currently we have 3 DC 1 PDC and 2 Sub DC. From the knowledge i will say Exchange 2007 to be a DC is not a good configration. as of now i have 10 GB ram installed on excahgner server ( which is DC also ) and still page file usage is 10.x GB. from 1-2 week i have noticed that Exchagne started crasghing (Blue screen of Death ) and reboots normal. Exchange server is very important part of our company i need help i am thinking to demote the server ad DC. second issue is our domain is single name domain which i am upgrading to server 2008 in next week by preparing new forest any suggestion on exchange level to migrate to server 2008. Your help will be grealy appriciated. Imran Net Admin. ------------------------ Event Type:ErrorEvent Source:System ErrorEvent Category:(102)Event ID:1003Date:9/10/2008Time:11:39: amUser:N/AComputer:W2K3R2-EXCH1Description:Error code 000000000010be7e, parameter1 ffffffffc0000005, parameter2 fffff800012b167c, parameter3 fffffadef64b08a0, parameter4 fffffadef64b02b0. For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.Data:0000: 53 79 73 74 65 6d 20 45 System E0008: 72 72 6f 72 20 20 45 72 rror Er0010: 72 6f 72 20 63 6f 64 65 ror code0018: 20 30 30 30 30 30 30 30 00000000020: 30 30 30 31 30 62 65 37 00010be70028: 65 20 20 50 61 72 61 6d e Param0030: 65 74 65 72 73 20 66 66 eters ff0038: 66 66 66 66 66 66 63 30 ffffffc00040: 30 30 30 30 30 35 2c 20 000005, 0048: 66 66 66 66 66 38 30 30 fffff8000050: 30 31 32 62 31 36 37 63 012b167c0058: 2c 20 66 66 66 66 66 61 , fffffa0060: 64 65 66 36 34 62 30 38 def64b080068: 61 30 2c 20 66 66 66 66 a0, ffff0070: 66 61 64 65 66 36 34 62 fadef64b0078: 30 32 62 30 02b0 ---------------- Event Type:WarningEvent Source:USER32Event Category:NoneEvent ID:1076Date:9/10/2008Time:11:39: amUser:ORDERNET\AdministratorComputer:W2K3R2-EXCH1Description:The reason supplied by user ORDERNET\Administrator for the last unexpected shutdown of this computer is: System Failure: Stop errorReason Code: 0x805000fBug ID: no idea just crashed will invesBugcheck String: 0x0000007e (0xffffffffc0000005, 0xfffff800012b167c, 0xfffffadef64b08a0, 0xfffffadef64b02b0)Comment: 0x0000007e (0xffffffffc0000005, 0xfffff800012b167c, 0xfffffadef64b08a0, 0xfffffadef64b02b0) For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.Data:0000: 0f 00 05 08 .... -------------------------

Ok, you've got a lot going on here. Exchange 2007 is supported on a domain controller. Depending on the size of your orginization, this may not be ideal, but there is nothing "improper" about this. Blackberry Professional software IS supported on a Domain Controller, AND Exchange 2007. It differs from the full BES product in this way. Exchange 2007 DOES support single label domain names thanks to Ptex,myself and others who posted heavily on this forum. It is, as you probably know, highly unadvisable. You can read that post for more detail. To install future versions of Exchange (whenever it may come out) you will need to have a fully qualified domain name. That means Single Label Domain names (SLDs) will not be supported after Exchange 2007. Because you can not rename a domain that has Exchange 2007 installed, you must use ADMT and migrate, or start over. You can read all about that in the link above. Ok, so your server is crashing. This is not likely related to any of the above 4 items. I also didn't understand what you meant by page file was10 x GB. Page file recommendations can be found here. Let's talk more about the server crashing, since that seems to be your only real "problem".0x0000007e errors on server 2003 are described in these links. Please read through them and let us know what else you find.

Can some one please reply to me on this thread. If i demote Exchange srever as DC what will happen. What is best practice of doing this. Thanks Imran.