I have a client using Outlook 2007 and it continually states that the certificate doesn't match the site and she must choose to continue against the security recommendation. Other users in her office are using the same settings (but not Outlook 2007) and do not get any errors.
We have an SSL cert from Godaddy that allows us to use mail.domainname.com and z1.domainname.com as valid SSL domains, and I've confirmed that she's using mail.domainname.com as the incoming/outgoing server.
I'm using mail.domainname.com for the zimbra administrator login and it's fine in IE etc.... I don't have Outlook 2007 anywhere to test this with... does anyone know of a way to shut it up?