Hello, I'm working for a small company which has settled on OpenBSD as its server software (because the security is excellent). We have settled on what software to use for everything but the mail server. I'd like to request recommendations from the knowledgeable people of this list. The priorities for the mail server are: 1. Security 2. Usability (for the end user - not everyone is technically skilled, although the setup can be done for anyone who needs help) 3. Ease of setup 4. Scaleability Obviously the first is by far the most important. The other three are more perks than anything else.
Thank you, Steve