In the disk-crash, I lost some more of course. Slowly I'm detecting all non-recovered parts. One thing I lost were my own rules for Spamassassin. I found a good replacement for my own rules at SARE, the spamassassin rule emporium.
The rules I made myself were mainly aimed at stocktraders-spam, so i copied 70_sare_stocks from their website.
They also have a script to auto-update the custom rulesets, but for now I just wait and see how this works.