Sendmail milters - not so open source anymore

A couple of months ago I mentioned sendmail milters. Snert are no longer offering all of them under an open source license unfortunately. In some ways I can understand why they are doing it. Even programmers have to eat :) - however it is still sad to see software licenses changing like that. The milter we are using, milter-ahead, is still available as "Free Source", but milter-sender is now commercial.