I am looking into setting my own home email server, matrix server, and mastodon server. I want them to each connect to LDAP so that I can create one user and it work on all three. The email server needs to have a webmail function.
Any advice on the best linux email servers or other general advice would be appreciated.
My ultimate goal is to build a proof of concept system that I can demo to the leaders in my church in order to convince them to offer these services to their members.