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External firewall rule for publishing Exchange 2010 web services using TMG 2010

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Hi,

I am trying to publish Exchange 2010 OWA/EAS/Outlook Anywhere using TMG 2010.

Configuration detsils:

TMG 2010 has 2 NICs--Internal and External. External NIC has multiple IP asociated with it (used for multiple listener)

OWA/EAS will use basic auth and OA will use NTLM auth.

I have created 2 listerners--listener1  for OWA and EAS both  and listener2 for OA. The relevant publishing rules have also been created.

The publishing rule for OA/EAS has autodiscover.contoso.com listed in the public website along with mail.contoso.com.

I have 2 public DNS records- mail.contoso.com and autodiscover.contoso.com.

mail.contoso.com will be used for OWA/EAS/OA and is pointing to the external IP of listerner1.

autodiscover.contoso.com is pointing to external IP of listerner2 which will make the OA work. Do I also need to point the autodiscover.contoso.com to the external IP address of  listerner1 for EAS to work? Any help will be appreciated.

Regards,

Imrul Emon

  


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