Nothing fancy. Just hosted calendar, address book, and email. I could roll something with LDAP for the address book, and any of the usual email-only servers (Sendmail plus UW IMAP, or more modern equivalents), but that would be a bit administration-heavy.
OS X Server will do that (pay), I've been doing the OpenBSD / Postfix / Dovecot / OpenLDAP / WebDAV thing. Still not sure on the whole calendar thing. It really isn't that bad once you get it setup and make sure to keep up with the updates.
Would you be up for sharing your experience setting it up? Whether a blog post, an e-book, or whatever - I'll bet there are some people who would love to do the same, but use the experience of someone who's already got it working together.
sure, it will be a couple of days - I am working with 4.9 this weekend / next week and it has a different setup (they added rc.d to OpenBSD) - I will do a step-by-step next week. I am also trying to do my spam stuff a little different.
