It would be easier to fire up CPAN and install the latest than to try and figure it out. You are back level 2 or 4 releases.
If you previously installed from a distro of some kind you should probably upgrade using the newer distro rather than CPAN directly; otherwise you can end up with mucked up installations since some distros move things around.
ok. i'll be doing it. but we are using vpopmail with individual preferences for every user. does that mean that every single user has to start from scratch?! how do you rebuild individual databases?! i remember asking bout that in order to be able to do black/white listing per user and as far as i remember that was not possible?!?!?! and what happened the the rbl lookups?!?!
Not much has changed in regards to any of this between 3.0.4 and now. The major change is that there are more things in plugins, and some of them arean't enabled by default. You will have to look for init.pre and any other *.pre files in the same general place, and see which things you want to uncomment. I think some of the RBLs may qualify for this.
The user config files, if they were up to date in 3.0 and not spitting warnings, will probably still be OK. There has been some added syntax checking, so things that were wrong but didn't get complaints before might get complaints now. Same with your site-wide config files. As always, it is a good idea to run --lint after the new install to see what it might complain about.
I don't believe either the Bayes or AWL databases have changed since around 3.0, so I don't think you should have to do any rebuilding as the result of the upgrade.
Loren