The numbers in the article show something different: 50% of the spammers directly and only connect to the secondary MX. From what I observed. most dont even bother trying the primary MX because there usually the best Anti-Spam measurements are installed.
After all, the secondary MX is only for emergency...
My suggestion: Have none of the MX listen to port 25. Instant reduction do no spam any more. Okay, no legitimate e-mail either, but they're such a small percentage, anyway:-)
The important part is Any UNIX command or script, the remainder are just examples. Look at the code snippet right below it, there is a standard system call, executing a command.
No problem with calling a Python script from that.
If you really want to increase security, use the
new chroot facilities.
I don't understand what you are saying here. People use https to prevent others from sniffing their traffic, e.g. for credit card numbers or other data that should be kept secret, like passwords. Chroot environments are used for a completely different purpose: To keep the impact on your whole system as little as possible when (not if!) a security flaw in the daemon is discovered and thus an attacker can execute arbitrary code on your machine.
These seem like courses I'd take to get a certificate in each, not a degree. You can have a C++ programming course with Microsoft Visual, but that should be up to the professor or the curriculum on top of it. I've been in C++ programming classes that allowed the students to use whatever C++ compiler they wanted, since it was the underlying programming priciples that were important, not that we knew how to navigate Microsoft's expensive interface.
You're very right here, when I learned programming in C (which taught us a lot about algorithms and data structures as well), we had to program ANSI C. Our programs had to be platform-independent enough to be compiled either under GNU/Linux with gcc or MS VC under WinNT4, we didn't know which one before.
And I don't like the idea of a C++ course, because it is neither strictly object-oriented nor imperative, it's both.
We started with Pascal, went on to C, and learned OO with Java, which was a very good decision, IMHO.
That's exactly what I was thinking - who's gonna clean that mess? Oh, wait, they'll probably just throw it out after half a year and buy a new one...
When I look at out kitchen (shared among six students) I know where I would never put such an expensive piece of electronics...
Just wait for the questions popping up - hey, you've got a stuck red pixel on your display - oh, no, wait, it's just tomato sauce from last week's spaghetti!
But, admittedly, the thought of using LEDs is intriguing, and it looks cool!
So this means that the laptop will have to be ON in your bag, draining batteries even when you're not shooting? By the time you've done your shoot, your laptop batteries will be dead. Hurray!
Wrong, with current mobile processors you get run-times of eight hours when working, if it's in your bag idle'ing away most of the time it can prbably be even more. So it should be able to last an average sports event.
My wife and I have a pair of digital cameras. They both have USB plugs. But the USB cables for each are not interchangeable, with each other or with any other USB cables that we have. Only the computer end is standard; the camera end is unique to the camera. [..]
So a bluetooth-to-USB adapter would probably only work for one (or a very few) cameras. You'd find that you have to buy it from the camera maker, because nobody else would have one that fits your camera.
While some camera manufacturers chose the path of designing their own connector for the camera side, there is a standard mini-USB connector. For example, my Olympus camera uses the same type of cable as my father's Konica. And a bluetooth connector for that would be an option.
And for the usefulness: Imagine a professional photographer with a Notebook in his backpack, transfering every image nearly instantaneous from the camera to the notebook, and the notebook uploading them via WLAN to the server. I honestly think this would rock;-)
Do we see people blaming Maxtor for every hard drive (and it's quite a few) that fails after 18 months, espeically since their warrenty now only covers the first 12?
Well, I do. We have had 4 out of 3 hard disks fail within 18 months, and one of those less than 2 months after being replaced.
I think they reduced their warranty for a good reason, and that is the very same reason I won't buy Maxtor again if I get the choice.
By the way, two of those failures were in a RAID1 array within a 48 hour period, and we were lucky that the disk that failed first was only half dead so we could get the data off it... I know, a RAID is no backup, but student's accomodations are not very data-dependent;-)
At least they gave us "priority handling" on the last one, so we didn't have to pay the shipping on that. And one came back +20 GB, the other one +60 GB. Doesn't help in a RAID, but it's still nice. Which reminds me of that 60GB Maxtor, that came as replacement for a 40 GB and is currently failing...
AFAIK there are some wireless lan chipsets that are very flexible, you can even change the frequency range used with a different firmware.
So this firmware is distributed with the driver, to stay flexible and to reduce hardware cost - no flash ROM or static RAM on the card, only DRAM.
Trouble is that the use of radio frequencies is heavily regulated, so the manufacturers would be in deep trouble if they allowed every Tom, Dick and Harry to turn that WLAN nic into whatever they like.
Unless hardware manufacturers understand this problem we are stuck with "proper" WLAN nics that bring their own firmware on chip and dont need it loaded by the driver.
Same problem with winmodems...
First of all, it's XServe, and many of those should be called XServes.
About G5 in an XServe - we will have to wait for that to happen, because you can't cool one or two G5s in a 1U case, and a G5 PowerBook won't hit the shelves too soon because of the power consumption...
You obviously ignored two important things:
1.) RTFM - Apple has excellent documentation for their hardware, even if it is quite old...
2.) If you have to use force (or even a file) then for the love of god STOP IT and leave it to someone who knows how to do it
A/32 net is a really big chunk that is intended for providers, not users. You should get a/48 from your provider without problems, which leaves you with 2^16 local subnets and 2^64 hosts per subnet.
Slashdot Mirror
The numbers in the article show something different: 50% of the spammers directly and only connect to the secondary MX. From what I observed. most dont even bother trying the primary MX because there usually the best Anti-Spam measurements are installed. :-)
After all, the secondary MX is only for emergency...
My suggestion: Have none of the MX listen to port 25. Instant reduction do no spam any more. Okay, no legitimate e-mail either, but they're such a small percentage, anyway
The important part is Any UNIX command or script, the remainder are just examples. Look at the code snippet right below it, there is a standard system call, executing a command.
No problem with calling a Python script from that.
Has anyone else noticed that when this topic first spread, everybody was talking about "Andy Tanenbaum" as if they all were old buddies of his...
so essentially, the president seems to be informed, and if I want to know it, I have to become president of the united states ;-)
Yeah, like I'd like them to know how often and where (by IP-address) I sync my iPod. Welcome 1984...
You can't solve a social problem with technology.
I don't understand what you are saying here. People use https to prevent others from sniffing their traffic, e.g. for credit card numbers or other data that should be kept secret, like passwords. Chroot environments are used for a completely different purpose: To keep the impact on your whole system as little as possible when (not if!) a security flaw in the daemon is discovered and thus an attacker can execute arbitrary code on your machine.
You're very right here, when I learned programming in C (which taught us a lot about algorithms and data structures as well), we had to program ANSI C. Our programs had to be platform-independent enough to be compiled either under GNU/Linux with gcc or MS VC under WinNT4, we didn't know which one before.
And I don't like the idea of a C++ course, because it is neither strictly object-oriented nor imperative, it's both. We started with Pascal, went on to C, and learned OO with Java, which was a very good decision, IMHO.
Just wait for the questions popping up - hey, you've got a stuck red pixel on your display - oh, no, wait, it's just tomato sauce from last week's spaghetti!
But, admittedly, the thought of using LEDs is intriguing, and it looks cool!
Wrong, with current mobile processors you get run-times of eight hours when working, if it's in your bag idle'ing away most of the time it can prbably be even more. So it should be able to last an average sports event.
While some camera manufacturers chose the path of designing their own connector for the camera side, there is a standard mini-USB connector. For example, my Olympus camera uses the same type of cable as my father's Konica. And a bluetooth connector for that would be an option.
And for the usefulness: Imagine a professional photographer with a Notebook in his backpack, transfering every image nearly instantaneous from the camera to the notebook, and the notebook uploading them via WLAN to the server. I honestly think this would rock ;-)
Do we see people blaming Maxtor for every hard drive (and it's quite a few) that fails after 18 months, espeically since their warrenty now only covers the first 12?
;-)
Well, I do. We have had 4 out of 3 hard disks fail within 18 months, and one of those less than 2 months after being replaced.
I think they reduced their warranty for a good reason, and that is the very same reason I won't buy Maxtor again if I get the choice.
By the way, two of those failures were in a RAID1 array within a 48 hour period, and we were lucky that the disk that failed first was only half dead so we could get the data off it... I know, a RAID is no backup, but student's accomodations are not very data-dependent
At least they gave us "priority handling" on the last one, so we didn't have to pay the shipping on that. And one came back +20 GB, the other one +60 GB. Doesn't help in a RAID, but it's still nice. Which reminds me of that 60GB Maxtor, that came as replacement for a 40 GB and is currently failing...
AFAIK there are some wireless lan chipsets that are very flexible, you can even change the frequency range used with a different firmware.
So this firmware is distributed with the driver, to stay flexible and to reduce hardware cost - no flash ROM or static RAM on the card, only DRAM.
Trouble is that the use of radio frequencies is heavily regulated, so the manufacturers would be in deep trouble if they allowed every Tom, Dick and Harry to turn that WLAN nic into whatever they like.
Unless hardware manufacturers understand this problem we are stuck with "proper" WLAN nics that bring their own firmware on chip and dont need it loaded by the driver. Same problem with winmodems...
First of all, it's XServe, and many of those should be called XServes.
About G5 in an XServe - we will have to wait for that to happen, because you can't cool one or two G5s in a 1U case, and a G5 PowerBook won't hit the shelves too soon because of the power consumption...
You obviously ignored two important things:
1.) RTFM - Apple has excellent documentation for their hardware, even if it is quite old...
2.) If you have to use force (or even a file) then for the love of god STOP IT and leave it to someone who knows how to do it
A /32 net is a really big chunk that is intended for providers, not users. You should get a /48 from your provider without problems, which leaves you with 2^16 local subnets and 2^64 hosts per subnet.