Noticed I wasn't recieving mail after running pkg update on my mailserver. I found bogofilter had stopped working due to libgsl.so.17 being missing. It appears to have been renamed to libgsl.so.0.17 in the last update to the gsl port.
The mail/bogofilter port did get a version bump when gsl was updated but it looks like the bogofilter-sqlite and bogofilter-tc ports didn't.
A commit references this bug:
Date: Thu Aug 21 09:05:30 UTC 2014
New revision: 365537
mail/bogofilter-(sqlite|tc): bump these too after math/gsl lib change
Submitted by: ahktenzero