CrossOrg Szenario

OrgA (Source): Ex2003 (all mailboxes) and 2x2010VM (FreeBusy PublicFolder)
OrgB (Target): Ex2010
Shared Addressspace for acme.com
GALSync between Orgs

When following the guidance of Configure Cross-Forest Connectors http://technet.microsoft.com/en-us/library/bb123546%28v=exchg.141%29.aspx
how will mails be treated that are accepted from the internet by OrgB and then forwarded to OrgA?

As the 2010 connector will authenticate with high privileges on 2003 will the mails bypass antispam or worse?

Example:
from: abc@aol.com to 123@acme.com
accepted By OrgB and GALLookup redirects to 123@acme.old
via authenticated SendConnector to OrgA
OrgA accepts (but will the mail from the Internet now have too high privileges?)

is that worry correct or is there a special configuration when sharing the addressspace?

thanks
 Thorsten

Hi,

I think its like a SmartHost scenario:

http://technet.microsoft.com/en-us/library/cc626187(v=ws.10).aspx

Thanks,

Hello Simon,

thanks for your input, but its much more complicated than the smarthost.

smarthost basically just tells exchange where to deliver mail to.

here its about

-Koexistence of 2 Exchange Organization
-having them recognize mails from the other Org as "authenticated" for certain situation
-shared Addressspace smtpDomain

for each of those there is a solution, but all three combined disqualify some of the single-solutions i have found yet.

Thanks
Thorsten