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cannot send mail after DC replacement - 10.Feb.2008 1:59:02 AM

itaybl

Posts: 15
Joined: 8.Nov.2007
Status: offline

hello everyone. thank in advance for your help...
i work with exchange 2003. i have 2 windows2003 domain controllers and i need to replace them with new machines. i have done all that needs to be done and replaced one of the DC. all well- replication, etc... after that, e-mails just don't go out. they stuck in the queue and dows not routed out. only when i shutdown the new DC or demote it back to member server e-mails start to routed out. what am i missing ?
1. the new DC is exactly with the same name and IP address as the old one. is it ok or is it better to change the DC name ?
2. when i think about it' i do not remember if the new DC is configures in the directory access tab. does it needs to be automatically or can i add it manualy? what is the better way ?
3. is it necessary to restart all exchange services after the new DC installation?
thank you
itay

Post #: 1

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RE: cannot send mail after DC replacement - 10.Feb.2008 2:35:45 AM

mdwasim

Posts: 247
Joined: 17.Apr.2007
Status: offline

Hello Itay,

The DC that you replaced was the 1st DC (root DC) ?
What were the roles assigned to replaced DC ?
After Replication have you transfered the roles ?
By default when you setup AD, the root DC that gets created have all the FSMO roles, including GC.
On which DC did you install Exchange?

Also check which is your GC server, using active directory sites and services > sites > default first site > servers > ser01 > NTDS Settings > Properties and see if Global Catlog is enabled or not.. check this on both servers.

There is need of more clerification about your scenario.

Hope to see ur reply soon.

Regards,
Wasim

< Message edited by mdwasim -- 10.Feb.2008 2:45:17 AM >

_____________________________

Thanks,
Wasim.

http://exchangeisp.blogspot.com

(in reply to itaybl)

Post #: 2

RE: cannot send mail after DC replacement - 10.Feb.2008 2:41:46 AM

itaybl

Posts: 15
Joined: 8.Nov.2007
Status: offline

hello Wasim.
1. before demoting, i have transferred all fsmo and GC to the remaining DC
2. after the installation of the new DC i did not transfered back any fsmo to him but i made him another GC.
3. the exchange is not installed on any DC, but on a domain member server.
thanks

(in reply to mdwasim)

Post #: 3

RE: cannot send mail after DC replacement - 10.Feb.2008 2:48:19 AM

mdwasim

Posts: 247
Joined: 17.Apr.2007
Status: offline

Are you having root DC and Additional DC scenario?
or parent child pattern.?

(in reply to itaybl)

Post #: 4

RE: cannot send mail after DC replacement - 10.Feb.2008 2:52:55 AM

itaybl

Posts: 15
Joined: 8.Nov.2007
Status: offline

no.
just 2 DC's in a single domain

(in reply to mdwasim)

Post #: 5

RE: cannot send mail after DC replacement - 10.Feb.2008 3:18:47 AM

mdwasim

Posts: 247
Joined: 17.Apr.2007
Status: offline

Can you check if exchange is using proper your new DC as GC server.

go to Fist administrative group > servers > serv01 > properties > Directory Access tab.

(in reply to itaybl)

Post #: 6

RE: cannot send mail after DC replacement - 10.Feb.2008 3:24:49 AM

itaybl

Posts: 15
Joined: 8.Nov.2007
Status: offline

i have started the installation all over. i will check it later. is it needed to be discovered automatically or can i configure it manually ? and is it a must to restart exchange services after the new DC is online ?

(in reply to itaybl)

Post #: 7

RE: cannot send mail after DC replacement - 10.Feb.2008 3:30:22 AM

mdwasim

Posts: 247
Joined: 17.Apr.2007
Status: offline

By Default exchange auto discovers GC, but even on safer side its better to check it and get confirmed.
as far as i know there is no such hard and fast requirement of restarting exchange services. but even then if you like to give a try u can go ahead.

(in reply to itaybl)

Post #: 8

RE: cannot send mail after DC replacement - 10.Feb.2008 6:49:01 AM

itaybl

Posts: 15
Joined: 8.Nov.2007
Status: offline

the new DC is back online. i have set him as another GC. still, in the ESM, under directory directory access, i don't see also the new DC, only the one that i haven't replaced yet. what do i need to do so it will be discovered automatically ?
thanks

(in reply to mdwasim)

Post #: 9

RE: cannot send mail after DC replacement - 10.Feb.2008 6:53:27 AM

mdwasim

Posts: 247
Joined: 17.Apr.2007
Status: offline

The DC that you have not changed is GC .. ?

(in reply to itaybl)

Post #: 10

RE: cannot send mail after DC replacement - 10.Feb.2008 6:54:32 AM

itaybl

Posts: 15
Joined: 8.Nov.2007
Status: offline

yes.
i have 2 GC now. is it a problem ?

(in reply to mdwasim)

Post #: 11

RE: cannot send mail after DC replacement - 10.Feb.2008 7:13:24 AM

mdwasim

Posts: 247
Joined: 17.Apr.2007
Status: offline

No its not the problem, by default exchange will consider the 1st DC of forest for its GC. and i hope 1st DC is where you have installed exchange..
If you put New DC offline, then things work?

(in reply to itaybl)

Post #: 12

RE: cannot send mail after DC replacement - 10.Feb.2008 7:22:50 AM

itaybl

Posts: 15
Joined: 8.Nov.2007
Status: offline

i did not install exchange on DC, but on member server.
when i put new DC offline things work good.

(in reply to mdwasim)

Post #: 13

RE: cannot send mail after DC replacement - 10.Feb.2008 7:29:56 AM

mdwasim

Posts: 247
Joined: 17.Apr.2007
Status: offline

Yes, I know you installed on Member server, but when you run domainPrep it contact DC.
When you put New DC online what events get logged? might be possible something will be helpfull from there.
Also check the NDR Error if any.

(in reply to itaybl)

Post #: 14

RE: cannot send mail after DC replacement - 10.Feb.2008 7:37:12 AM

itaybl

Posts: 15
Joined: 8.Nov.2007
Status: offline

all prep was running good. i don't have something bad in eventlog.
i don't get any NDR.
the massge in the tracking center is going all the way to "message routed and queued for remote delivery". and stops there
is there anything else i need to do on the new DC ? give him a role? install exchange something on him ?

(in reply to mdwasim)

Post #: 15

RE: cannot send mail after DC replacement - 10.Feb.2008 7:40:02 AM

mdwasim

Posts: 247
Joined: 17.Apr.2007
Status: offline

I guess you dont have to do anything, as new DC is not holding any mail-enabled objects. I will need to make a labtest scenario like urs to troubleshoot further..

(in reply to itaybl)

Post #: 16

RE: cannot send mail after DC replacement - 10.Feb.2008 7:41:09 AM

itaybl

Posts: 15
Joined: 8.Nov.2007
Status: offline

oh god...
thanks anyway for now

(in reply to mdwasim)

Post #: 17

RE: cannot send mail after DC replacement - 10.Feb.2008 8:24:16 AM

itaybl

Posts: 15
Joined: 8.Nov.2007
Status: offline

thank you ndwasim
i found my problem and fixed it. all works well now.
i hit my head against the wall and remembered that the new DC is also DNS server and need to configure the DNS addresses of my ISP...
oh god...
all is well now.
thanks a lot ndwsim !!!
case is closed...

(in reply to itaybl)

Post #: 18