GAL Sync between 2 forest

Let's say I have 2 different companies having their own Exchange server but would like to somehow sync their GALs.  Due to politics a Domain and Trust is not possible between the 2 companies.

I would need a way to manually do this even if it means exporting the GALs to a pst then importing it to the other Exchange server, which I need help with so please explain how to do this.  Also,is there a batch file to do the export and a another batch file to do the import.  If this is not the recommended method please do say it's not.
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Pentrix2Asked:
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aa230002Commented:
There are two ways to do it.
1) a Tool like MIIS which would be expensive for you.
2) Export all the users and DLs from 1 forest using CSVDE and import them into other forest as contacts and vice-versa.

CSVDE is a command line tool and is available with Windows Support Tools, type csvde /? for all options available.

Thanks,
Amit Aggarwal.
Pentrix2Author Commented:
Using the CSVDE, what is the command for it?

Also, when I import them back over as contacts what is the command for this as well?
aa230002Commented:
CSVDE is a command line tool which is used both for export and import.
simply go to command prompt and type - CSVDE /? (You need windows support tools to be installed on the box)
this will provide you whole information about this utility and how to use it.

Thanks,
Amit Aggarwal.
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aa230002Commented:
Pentrix2Author Commented:
Yes I do see the parameters for csvde, but would like to know which one in particular.
aa230002Commented:
Here is an example->

CSVDE -f file_name.csv -d "root of your domain" -s <DC_name> -r "((objectClass=user))" -l "ObjectClass, ObjectCategory,GivenName,name,displayName"

You will have to modify this according to your requirement.

Thanks,
Amit Aggarwal

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