Company merger - Two domains exist - New company created 1

[Pinheadh]

G'Day any help appreciated with this one,

Company A and Company B have merged. This merge has created Company C.
Company A have a 2000 Native domain with Exchange 2000. Company B have a Native 2000 domain with Exchange 2003.
Company C currently doesn't have any infrastructure.

Wondering how to go about merging Company A with Company B and becoming Company C in the process? Ideally, emails leaving Company A (@a.com) and Company B (@b.com) will show @c.com. Emails sent to @a.com and @b.com will be routed to the correct servers. Emails sent to @c.com will also be routed to the correct person. The migration of the A and B domains to C.COM will come later. Looking at standardising the emails first.

Will be moving to Exchange 2007 so would like C.COM to be running Exchange 2007 and doing the routing if possible.

Any gotcha's to look out for?

Thank you in advance.

Regards,

Tim.

 

[xmsre]

Your best bet would be third party tools for the interorg migration. I'd look at Quest.

 

[Pinheadh]

Thanks XMSRE, will have a look.

 

[Zelandakh]

or exmerge if you want to do it easily and free.

 

[xmsre]

It's a lot more involved than that if you exmerge. Permissions, Groups, replies to premigration emails,... I'd look at the tools.

 

[lcstou]

Hey..u can coexist exchange 2007 with 2003 not with 2000.
for this u need to move all mailboxes from 2000 to 2003 and then 2007.
if its different organization u can move mailboxes by using mail migration wizard.

 

[Pinheadh]

Thanks all.
Thining of using Edge Transport server to do address re-writing. Sit it in C domain and have trusts between A and B domain. Then (eventually) move A and B users and computers into C domain. Thoughts on this?
Thanks,
Tim.