I work for a group of companies - one parent company and 4 separate companies that it owns.
They all have separate systems - different domains, etc. and are on physically separate sites. They are all fairly small companies and each has a single on-site Exchange server serving just that site/company.
All sites use Outlook Anywhere so require a third party certificate.
My question is can I use a single third party (SAN) certificate for all 4 Exchange servers or do I need separate certificates for each?
Many thanks in advance for help with this :-)