I want to migrate from postfix to open exchange. Do have any experiences? There are any problems? Open exchange use also postfix and openldap, doesn't it?
Can I user cyrus? Can I use Sieve-Filter? What spam filter can I take? Can I use mac clients like apple mail and ical?
Can I see my emails and my caleder with a webinterface?
Is there an outlook connector to test the communication?

Best regards,