As per the policy we must deploy on-premise email server and we are planning to go for exchange enterprise or standard. However our user base is 20 users at present and we may maximum have 25 to 30 users in next 5 years. We are planning for barracuda email security appliance.
1. Please suggest is it recommend going with exchange standard OR exchange enterprise
2. As security point of view we should have tight security hence will there be any difference between standard and exchange
3. Understood standard will provide 5 mail database will this be sufficient for 25 to 30 users
4. What all features that will not be available in exchange standard compared to exchange enterprise.
please help, thanks in advance