Isoqlog is distributed through atp on Ubuntu.
I have it installed in a non vesta server and it works with exim4.
I get a “Segmentation fault (core dumped)” when executed.
I use it to detect spammers on my server. http://www.enderunix.org/isoqlog/
I would say that isoqlog could have compatibility issues when the release date of 2005 according their website is correct. Don’t have any knowledge about the toom anyway.