I want to begin exploring moving myself away from google apps, because it's expensive, and it looks like citadel has all of the groupware functions I need. So I am trying to install citadel-suite with:
apt-get install citadel-suite
But it returns:
citadel-suite: depends: citadel-mta but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
Well, yes. It does require citadel-mta. That's half the point. So why is it not going to be installed? What broken packages do I have held? Why are they broken? Why are they held? I didn't hold them. Or break them, for that matter.
The problem with apt-get is that, for the 10 years I have been using it, it has, to borrow an Apple phrase, just worked. Now that it isn't, I'm rather at a loss. I did try the -f switch, but it didn't help. I haven't made any modifications to /etc/apt/sources.list, so I can't revert them. What should I try next?