SSL Certificates

For Exchange 2007 you need a SAN (Subject Alternative Name) certificate allowing you to have many domain names represented by the one certificate.

e.g.

mail.domain.com
autodiscover.domain.com
exchange1.domain.com
exchange1.domain.local
exchange1

VeriSign supplies these for a cool $2891 USD ($150,000 guarantee)
- $395 for single domain 1 year
GoDaddy does the same for about $71.95 USD ($2000 guarantee)
- $29 for single domain 1 year


Wildcard certificates don't work very well for use with Exchange 2007 esp. if you have different internal and external domain names. Wildcard certificates equate to *.domain.com.