Mac OS X server 1.2

Im assuming you are actually talking about the Pre-Mac OS X, Mac OS X Server 1.2 or 1.2v3 builds:

If you can get a web server running on it (I believe it has a very elderly version of WebKit included), then you probably could host a website on it, but it would be (1) A massive security risk and (2) Probably not a particularly good idea given that software dates from 2000, and I doubt it supports modern things. Its also about the least common and least complete feature-wise in terms of Server OSes from Apple (Very early version of Cocoa, few apps) - Interesting to play with though.

As far as prior Apple Server versions go, There is no dedicated Server version of the Classic Mac OS, although the standard Classic Mac OS with AppleTalk IP and a few other things can kind've act as a server. The only prior Server specific things from Apple I am aware of are A/UX or Apple UNIX, which were specific server based UNIX builds that were "interesting".