Hello,

I have to migrate a windows server 2003 (AD) and the Exchange server 2003 to Windows server 2012 with exchange 2013.

I want to know, first of all, which migration should be first: the AD or Exchange?

anyone can help me with a "list" of steps I must do? (only the steps, at least, I will handle then with the rest of operations.)

Thank you,

Hi,

please check your forest level and domain functionalities level then you can migarte on it.

http://www.msexchange.org/articles-tutorials/exchange-server-2013/migration-deployment/planning-and-migrating-small-organization-exchange-2003-exchange-2013-part1.html

https://technet.microsoft.com/en-us/windowsserver/jj554790.aspx

Please check the above 2 article n it.

Regards

Muthu

Please check out this informative blog post which lets you how to migrate from SBS 2003 to Exchange 2013 on Server 2012 with ease: http://community.spiceworks.com/how_to/32049-migrate-from-sbs-2003-to-exchange-2013-on-server-2012-with-ease

You may also consider exchange server deployment assistant is a web-based tool which lets you in step-wise to get this job done.
Microsoft Exchange Server Deployment Assistant: https://technet.microsoft.com/en-us/office/dn756393.aspx

Moreover, If you wish to accomplish this migration task automatically, you may try this programmed application i.e. http://www.exchangemigrationtool.com/ which lets you to migrate between exchange servers without any interruption.

Hi,

Be aware that a transition from Exchange 2003 to Exchange 2013 is unsupported.  The supported path is to transition to Exchange 2007 or 2010 first.
For your reference: http://blogs.technet.com/b/mconeill/archive/2013/04/03/migration-from-exchange-2003-to-2013-a-no-go.aspx
If you want to deploy cross-forest migration, you can refer to Muthus suggestion.

Basis on Exchange 2013 system requirements, Exchange Server 2013 is supported in a Windows 2003 SP2 domain. Therefore, theres no need to consider the order for upgrading AD first or migrating Exchange.

Thanks