Hello We just got done installing exchange 2007 on windows 2008 server. Everything works well except when user logon to OWA they get The security certificate presented by this website was issued for a different website's address error. They get this error when they access internally and outside of our network. Is there a way to eliminate this warning? Im new to SSL certificates

this means they are going to https://mail.domain.com and the cert is configured for https://server.domain.com (or something similar)you'll need to generate a certificate that is validhttp://msexchangeteam.com/archive/2007/02/19/435472.aspx

Yes, as Jim said, you need to have 3rd party SAN certificate to eliminate this warning... Certificate Use in Exchange Server 2007 http://technet.microsoft.com/en-us/library/bb851505.aspxAmit Tank | MVP Exchange Server | MCITP: EMA | MCSA: M | http://ExchangeShare.WordPress.com

Ok so im going to need a Unified Communications Certificate for OWA? or can i used a standard SSL

UCC/SAN is perfect for Exchange use... Unified Communications Certificate Partners for Exchange 2007 and for Communications Server 2007 http://support.microsoft.com/kb/929395Amit Tank | MVP Exchange Server | MCITP: EMA | MCSA: M | http://ExchangeShare.WordPress.com