When a public service fails, and there are private alternatives, it is compared to them and eventually de-funded.
When a private oligopoly fails, or is wasteful, what happens? "We'll just raise prices"
Hello PSTN & Cable Co's. I
Similarly, since 85% of the energy in gasoline is turned into heat, it isn't helping. At 15% efficiency that is typical of internal combustion engines, you are down to about 5 kwh actually used to move the car, versus an electric motor which is over 90% efficiency. If you add that ICE has no regenerative braking, no means of storing kinetic energy for re-use, you have a further disadvantage for ICE.
I don't want to be that guy, but this is why you 1. Don't type fast when your command starts with rm -rf;
I typed this slowly:
2. Never rm -rf by absolute path at all;
3. Never start typing rm -rf at all, but type the rest of the command first and then edit in the rm; and
/<^H><^H>rm -rf ? how does this help ?
4. Don't use root shells, but sudo, and edit in the sudo last on potentially destructive commands.
sudo rm -rf / ?
There may be good reason to break one or more of these rules at one time, but never all four.
There is no substitute for just knowing what you are doing, and not doing the bad thing. I've seen people complicate their lives with incantations, and all it usually does is make it fail in a more complicated way. Simplicity is easier to remember.
https://www.roaringpenguin.com... they provide and support CANIT PRO, which is basically mimedefang and spamassassin on a debian base, with dynamically updated blacklists and filtering rules. It works really well. David is one of the guys behind behind mimedefang, so you are also helping open source by going with these guys. The pricing for us was really decent.
They usually work with appliances, but we managed to use our own configuration to do some sweet stuff: we put the mail filtering cluster in the DMZ, along with the DB. but we put the customization interface is on an internal network. That way there is no firewall exception for the DMZ (ok except SMTP... can't avoid that one.) and the DMZ gateway doesn't need access to internal credentials at all (Active Directory in our case) It just knows that the interface machine on the inside is trustworthy. Even though the DB has no access to authentication services, the users can still customize their filtering to their desire.
I think for big companies, one concern is that I have never heard anyone rave about spam filtering. In terms of brand-awareness it is a completely one way street, Either people are satisfied with it, in which case they shrug, or they get irrationally violently abusive of the service, and have un-realistic expectations. It is a risk for any major brand to operate spam filtering, with literally no upside (ok, aside form revenue, but if it is a small part of a business, the reputation risk might outweigh the revenues.) Touching people's email brings out all the consipacy buffs you can imagine, and for some small but vociferous group they always have their own solution, and whatever the email admin does is crap. That's a thing that was great about Roaring Penguin's CanIT PRO when we rolled it out, it gave each user the ability to turn off the filtering entirely, if that's what they wanted.
It worked like a charm. Whenever we got some idiot (the truth hurts!) who thought they could do better, we just said fine, here is how to turn it off. Out of 6000 boxes, we had about 200 opt-out right away, most of them turned it back on within a few days, after a year it was down to 60 or so, and then when there were some malware infection episodes, it came out that their 'custom' solutions were not actually working that well, and everyone came back into the fold. Being able to let people opt-out saved us literally months of pointless arguments while letting us deploy good service for the co-operative many.
This was for about 7000 mailboxes, which is small as far as mail installations go these days. The real clients for this stuff is hosting providers and outsourcing companies (cloud based) I think the reason for large companies exiting the business is the huge trend of small companies to cloud, there just isn't much of a market for small email installs anymore... People are using huge hosted configurations. It's gradually getting dismantled now because of some organization move to a single outsourced solution with many hundreds of thousands of mailboxes...
So long term, those other sources are likely going to have to go away or their costs will increase substantially, so redesigning the grid to deal with truly sustainable generation methods, like wind and solar, is going to need to be done sooner or later. If you are running a public utility, for the public good, you do not want to be prolonging environmental degradation by subsidizing incumbents at the expense of those who are doing the right thing for everyone's future.
In a Smart Grid world, Hoover Dam would sell at the price Hoover Dam wants to charge, and the price from Solar City at the price they want to charge... When you run out of cheap power, you buy the expensive stuff. When nuclear plants start paying for rent for 50,000 years of storage of their waste, and gas plants include carbon sequestration in their operations, perhaps their properly priced production cost will end up as 20 cents/KWh. Add in grid storage, and perhaps people will buy hoover dam power cheap at night, and use it during the day, when they need it. A lot of improvement becomes plausible (perhaps not easy, but at least plausible) with a smart grid.
There is no market solution to this problem, right now. Pehaps smart grids will be able to address that someday, but right now, it's just who lobbies the regulator better. Given the reality that a monopoly grid currently in place, and is necessary, and given a monopoly, it must be regulated, and that regulation will perforce shape the market, the choice before people is what shape of market do you want? Distributed generation, as it reduces the amount of electricity that must be moved over long distances, is more efficient, and therefore cheaper, and so if we are going to fail in any direction it should be in favour of reducing costs for everyone. On that basis, a feed-in tarriff that encourages distributed generation is better for everyone except the incumbent electric generation and distribution organizations, as it reduces the amount of electricity they sell and ship.
A transistor protected by a fast-acting fuse will protect the fuse by blowing first.