Server 10.10 mail

Hi,

we have a SSL certificate from Thawte that covers 4 domains, domain1.org, www.domain1.org, domain2.org, domain3.or

domain3.org shall be used for mail services.

When I enter this domain it tells me users may not be able to access this domain from the internet.

When I change the domain to WWW.domain3.org it gets the green point. But I can also enter asdfas.domain3.org and it becomes green.

What is this?

When I nevertheless remain with domain3.org and set up an email address and then add an imap account in a mail programm I get the warning that the certificate has a misname match issue. But the certificate covers domain3.org.

When I enter https://domain3.org I get the Server website with the lock, clicking on it shows me a valid certificate.

When I enter https://www.domain3.org I get a warning that the certificate is no valid - Exactly as it should be.

So what is the issue with mail?

Any ideas?

Thanks

Tristan