For a few years now, I'm using three RBL's to filter the incoming mails on our mail server, which hosts a few small-sized customers and some personal domains. The RBL's I use are: SpamHaus, SPEWS and SpamCop. We have set them up in sequence, so that a mail caught by one is not passed to the following anymore.
Looking at two days...
01/01/07 total mails processed : 1432 considered non-spam : 719 (50.21%) total number of blocks : 713 (49.79%) spamhaus : 630 (88.36%) spews : 2 ( 0.28%) spamcop : 81 (11.36%)
01/01/06 total mails processed : 381 considered non-spam : 155 (40.68%) total number of blocks : 226 (59.32%) spamhaus : 191 (84.51%) spews : 31 (13.72%) spamcop : 4 ( 1.77%)
... it shows the trend I've seen over this time: SpamHaus does a great job for me and we haven't received any complaints from the customers concerning people not able to contact them.
Given these (poor-man's statistics) it seems that SPEWS is of little use to us. SpamHaus catches most of the problems. Maybe even if we switched SPEWS' and SpamCop's order, we might see that the latter would be able to catch those mails now caught by the former. It's surely something we're going to try.
On the other hand, it might very well be that SPEWS would catch also all SPAM caught by SpamHaus. Reversing the current order might be a nice test before we come to any real conclusions on which RBL to drop;-)
The (current) bottom line: For us, SPEWS isn't causing any problems, but also doesn't help us that much. SpamHaus seems to be a great RBL source and SpamCop seems to be a nice addition.
Back in the days when I was still using windows, I used Virtuawin. It works very nicely, has a rich feature set, but... 9 virtual desktops, each one filled with application, sometimes brought Windows to its knees;-)
I agree with this personally... but let's play devil's advocate.
Dealing with large quantities of data has always been the sales pitch for mainframes. The question could therefore maybe be broadened to "can grids/clusters/multi-core/... really replace the mainframe?"
Computers are entering our lives at every level and sooner and sooner. Children are born nowadays in an age where they rather learn to type on a keyboard than learn how to breath.
Being a little geek myself I am the last to say that I'm not having fun fiddling with these damn nice machines, but still remembering the days without computers I do belive that children first need to be able to be children. Childhood only lasts for such a short time it is a shame that even this period of their live is invaded by these machines. Children should play, outside, with each other, In Real Life.
There was a time I believed that every child should have a computer in class as soon as possible is something I've left behind me for a couple of years now.
Let children be children first, they'll have time enough afterwards to discover the wonderfull virtual world... in there.
I believe that elsewhere the editor would be sacked for letting this rubbisch get through. Hm, we might have a recursive problem on our hands here if he in his turn would start looking for work on Slashdot.
A book that is really missing on this bookshelf is found on http://www.antipatterns.com/, really the definitive guide to learn from others' mistakes. O well, not always only others.
Shouldn't that read "Fedora Core" instead of "RedHat Linux" ? The last RHL (9) went EOL April 31, 2004. I guess it isn't "RedHat Enterprise Linux" that they will be using ?! After all if they would be using "RedHat Enterprise Linux" it's also "free of charge" since normally RedHat sells "RedHat Enterprise Linux".
Linus states "In other words, it's a way to _talk_ about things, not to implement them."
Joel states "[..] when you design your product in a human language, it only takes a few minutes to try thinking about several possibilities, revising, and improving your design. [...] So that's giant reason number one to write a spec. Giant reason number two is to save time communicating."
Maybe not a direct answer to your question, but related to this topic I wanted to add this thought:
Computers are entering our lives at every level and sooner and sooner. Children are born nowadays in an age where they rather learn to type on a keyboard than learn how to breath.
Being a little geek myself I am the last to say that I'm not having fun fiddling with these damn nice machines, but still remembering the days without computers I do belive that children first need to be able to be children. Childhood only lasts for such a short time it is a shame that even this period of their live is invaded by these machines. Children should play, outside, with each other, In Real Life.
There was a time I believed that every child should have a computer in class as soon as possible is something I've left behind me for a couple of years now.
Let children be children first, they'll have time enough afterwards to discover the wonderfull virtual world... in there.
The longest (as in deepest) directories on my own machine (restricted to my own home dir even) contain on the one hand development stuff and on the other hand structures created by eg. Evolution, my mail client. The latter is surely something I wouldn't "browse" using a file manager, but day to day development trees are a different thing I'd guess.
# for f in `find/home/xtof -type d`; do slashes=`echo -n $f | sed -e 's/[^/]//g'`; len=${#slashes}; echo -n $len ; echo -n " "; echo $f; done | sort -rn | head -10 17/home/xtof/cvs/... a directory in my local copy of my development cvs tree 17/home/xtof/evolution/mail/imap/... a directory created by evolution 16/home/xtof/cvs/... a directory in my local copy of my development cvs tree 16/home/xtof/cvs/... a directory in my local copy of my development cvs tree 16/home/xtof/evolution/mail/imap/... a directory created by evolution 15/home/xtof/cvs/... a directory in my local copy of my development cvs tree 15/home/xtof/cvs/... a directory in my local copy of my development cvs tree 15/home/xtof/cvs/... a directory in my local copy of my development cvs tree 15/home/xtof/evolution/mail/imap/... a directory created by evolution 15/home/xtof/evolution/mail/imap/... a directory created by evolution
Just looking at the different directory depths also shows that it takes quite a number of directories before I would get to a number that could be suitable with respect to the spatial paradigm.
# for f in `find/home/xtof -type d`; do slashes=`echo -n $f | sed -e 's/[^/]//g'`; len=${#slashes}; echo $len; done | sort -rn | uniq -c | head -10 2 17 3 16 6 15 24 14 56 13 153 12 173 11 274 10 455 9 653 8
It's probably just me who is abusing the hierarchical filesystem. Bad me! But given a simple bash prompt I feel pretty at ease with my structure. As a matter of fact, I think that I'd find the files I need even faster thanks to this structure than when I would limit myself to a 2-3 level structure.
note: The quick 'n dirty shell commands are to great extend badly in need of optimization, but it surely makes my point understandable. Off course do directories at level 17 contain all directories below, so not counting those would bring down the number of directories; but on the other hand those also contain stuff I need so... you could look at this from multiple angles off course.
While browsing the Mozdex site, I learned they are using Nutch, an open source search enigine. So I started browsing the Nutch site. On their site I found out that they are sponsored by Overture Research... The name seemed familiar. Clicking on the link I arrived at http://labs.yahoo.com.
Apparantly Yahoo is rather interested in this project. Browsing the Yahoo Labs site I found this page(which is also the third hit when googling for nutch): "Welcome to the Yahoo! Research Labs implementation of the Nutch open source search engine (www.nutch.org). This search engine is intended as a demonstration platform for a number of search related technologies that we are working on and is specifically not intended to provide a full and comprehensive search experience for the average user. If you do a search here, please do not be surprised or offended if your favorite site is not in the result set for your query.
With this in mind, please feel free to test drive the technology. Happy Nutch-ing.
A very quick test shows that the 50 million pages counting index of mozdex is indeed still far to small to really find something. The ranking system will also need some tweaking, but this is also clearly stated on the nutch site: "Nutch has not yet been tuned for quality. There are ten or twenty knobs that we can twiddle to adjust the ranking formula. We are developing software to do this tuning automatically, but the current code just contains guesses. With a little tuning we should be able to get results that are competitive with those of major search engines.".
Although it is currently not possible to do any real comparison due to the big difference in the number of indexed pages, it sure is nice to see both the Nutch project and the Mozdex project. I hope that both of these project will receive enough funding (and hardware) to continue, and maybe we'll see another/. post when they hit the 5 billion page count and we will be able to do a massive comparison... and all change from googling to nutching or mozdexing!
Slashdot Mirror
And your bounce bounces into someone elses mailbox, or even worse, if that emaI address also bounces, it bounces back and back until ... ?!?
For a few years now, I'm using three RBL's to filter the incoming mails on our mail server, which hosts a few small-sized customers and some personal domains. The RBL's I use are: SpamHaus, SPEWS and SpamCop. We have set them up in sequence, so that a mail caught by one is not passed to the following anymore.
Looking at two days ...
... it shows the trend I've seen over this time: SpamHaus does a great job for me and we haven't received any complaints from the customers concerning people not able to contact them.
Given these (poor-man's statistics) it seems that SPEWS is of little use to us. SpamHaus catches most of the problems. Maybe even if we switched SPEWS' and SpamCop's order, we might see that the latter would be able to catch those mails now caught by the former. It's surely something we're going to try.
On the other hand, it might very well be that SPEWS would catch also all SPAM caught by SpamHaus. Reversing the current order might be a nice test before we come to any real conclusions on which RBL to drop ;-)
The (current) bottom line: For us, SPEWS isn't causing any problems, but also doesn't help us that much. SpamHaus seems to be a great RBL source and SpamCop seems to be a nice addition.
But it doesn't stop all SPAM.
Back in the days when I was still using windows, I used Virtuawin. It works very nicely, has a rich feature set, but ... 9 virtual desktops, each one filled with application, sometimes brought Windows to its knees ;-)
http://virtuawin.sourceforge.net
See also my previous post about Virtuawin an other posts in reply to an article about "Improving the Windows XP User Interface" containing other useful applications in the same line: http://ask.slashdot.org/article.pl?sid=05/04/14/19 18218&tid=201
I agree with this personally ... but let's play devil's advocate.
Dealing with large quantities of data has always been the sales pitch for mainframes. The question could therefore maybe be broadened to "can grids/clusters/multi-core/... really replace the mainframe?"
Computers are entering our lives at every level and sooner and sooner. Children are born nowadays in an age where they rather learn to type on a keyboard than learn how to breath.
... in there.
d =10318361)
Being a little geek myself I am the last to say that I'm not having fun fiddling with these damn nice machines, but still remembering the days without computers I do belive that children first need to be able to be children. Childhood only lasts for such a short time it is a shame that even this period of their live is invaded by these machines. Children should play, outside, with each other, In Real Life.
There was a time I believed that every child should have a computer in class as soon as possible is something I've left behind me for a couple of years now.
Let children be children first, they'll have time enough afterwards to discover the wonderfull virtual world
(reposted from : http://ask.slashdot.org/comments.pl?sid=122736&ci
Looking for a job ? ... Ask Slashdot!
I believe that elsewhere the editor would be sacked for letting this rubbisch get through. Hm, we might have a recursive problem on our hands here if he in his turn would start looking for work on Slashdot.
Arghl.
A book that is really missing on this bookshelf is found on http://www.antipatterns.com/, really the definitive guide to learn from others' mistakes. O well, not always only others.
Shouldn't that read "Fedora Core" instead of "RedHat Linux" ? The last RHL (9) went EOL April 31, 2004. I guess it isn't "RedHat Enterprise Linux" that they will be using ?! After all if they would be using "RedHat Enterprise Linux" it's also "free of charge" since normally RedHat sells "RedHat Enterprise Linux".
It seems that Joel actually agrees...
Linus states "In other words, it's a way to _talk_ about things, not to implement them."
Joel states "[..] when you design your product in a human language, it only takes a few minutes to try thinking about several possibilities, revising, and improving your design. [...] So that's giant reason number one to write a spec. Giant reason number two is to save time communicating."
using VirtuaWin
Maybe not a direct answer to your question, but related to this topic I wanted to add this thought:
Computers are entering our lives at every level and sooner and sooner. Children are born nowadays in an age where they rather learn to type on a keyboard than learn how to breath.
Being a little geek myself I am the last to say that I'm not having fun fiddling with these damn nice machines, but still remembering the days without computers I do belive that children first need to be able to be children. Childhood only lasts for such a short time it is a shame that even this period of their live is invaded by these machines. Children should play, outside, with each other, In Real Life.
There was a time I believed that every child should have a computer in class as soon as possible is something I've left behind me for a couple of years now.
Let children be children first, they'll have time enough afterwards to discover the wonderfull virtual world ... in there.
note: The quick 'n dirty shell commands are to great extend badly in need of optimization, but it surely makes my point understandable. Off course do directories at level 17 contain all directories below, so not counting those would bring down the number of directories; but on the other hand those also contain stuff I need so
How long is the longest directory path on your machine ?
How long is the longest directory path of a default install (including gnome 2.6) ?
While browsing the Mozdex site, I learned they are using Nutch, an open source search enigine. So I started browsing the Nutch site. On their site I found out that they are sponsored by Overture Research ... The name seemed familiar. Clicking on the link I arrived at http://labs.yahoo.com.
Apparantly Yahoo is rather interested in this project. Browsing the Yahoo Labs site I found this page(which is also the third hit when googling for nutch): "Welcome to the Yahoo! Research Labs implementation of the Nutch open source search engine (www.nutch.org). This search engine is intended as a demonstration platform for a number of search related technologies that we are working on and is specifically not intended to provide a full and comprehensive search experience for the average user. If you do a search here, please do not be surprised or offended if your favorite site is not in the result set for your query.
With this in mind, please feel free to test drive the technology. Happy Nutch-ing.
A very quick test shows that the 50 million pages counting index of mozdex is indeed still far to small to really find something. The ranking system will also need some tweaking, but this is also clearly stated on the nutch site: "Nutch has not yet been tuned for quality. There are ten or twenty knobs that we can twiddle to adjust the ranking formula. We are developing software to do this tuning automatically, but the current code just contains guesses. With a little tuning we should be able to get results that are competitive with those of major search engines.".
Although it is currently not possible to do any real comparison due to the big difference in the number of indexed pages, it sure is nice to see both the Nutch project and the Mozdex project. I hope that both of these project will receive enough funding (and hardware) to continue, and maybe we'll see another /. post when they hit the 5 billion page count and we will be able to do a massive comparison ... and all change from googling to nutching or mozdexing!
One to watch