OWA users are getting warning message

[screenburn]

Our OWA users are facing problem while opening archived emails. While opening archived emails page is redirected and getting the following warning message

You are being redirected to "http://webmail.domain.com/enterpriseVault". This website may not be trusted and may be used to collect personal information, such as user name and password. Are you sure that you want to continue to this website? Yes or No.

I found following technote

http://www.symantec.com/business/support/index?page=content&id=TECH67715&key=50996&actp=LIST

Run owauser script and checked the Exchangeservers.txt file but still getting same warning message.

Any idea what is the reason behind that and how can I overcome that message.

thank you in advance.

[Natalia_B_]

Do you have ISA Server in use?

[screenburn]

Yes we are using ISA Server 2006 in environment. Already publishing document using ISA 2006.

[Natalia_B_]

You can try to edit isa settings for the ev rule:

enable the option "request appear to come from the ISA Server computer" under proxy requests to published site in tab "To".