Some words of wisdom for all ISPs
Vernon Schryver, in news.admin.net-abuse.email:
Spam complaints must be viewed like complaints from your neighborsthat your children or other pets have again wrecked gardens. Spamcomplaints are evidence of failures, and should be exceptionsinstead of part of the main anti-spam machinery.
(From Message-ID <95cqle $80v$1@calcite.rhyolite.com> .) One of the things I've learned the hard way in writing Unix programsis that you should almost never expect to know all of the errno valuesthat system calls can return. In theory it's documented in themanpages, but in practice a manpage's list is never comprehensive.The safest thing to do is to assume that any system call can returnalmost any errno value. The example I remember most vividly is that our SMTP server daemonused to carefully check the result of This week we received 12,785 email messages from 208 different IPaddresses. Our SMTP server handled 17,958 sessions from 984 differentIP addresses. Session volume is dramatically down from the levels of last week . Connection volume is also down: 122,600 connections from at least44,760 different IP addresses. However, we hit a highwater mark of 50connections being processed at once on Tuesday, so we have had This is one of those amusingly creative mistakes to see in action: Nameservers normally answer a query for a domain they The other day a weblog I read had a post (and their RSS feed) blow up because of invalid markup: an entry wasquoting some text that had bare '<'s in it, nothing escaped them, andinvalid HTML tags got generated and ate part of the entry. (Theproblem's now been fixed.) There's nothing noteworthy about this, and that's the problem: peoplemake this mistake all the time. HTML has a bunch of picky rules tokeep track of Here's a surprising reason to have a really large RAID stripe size: toreduce per-spindle IO loads for random IO. How and why this works is going to take some explanation. First,modern disks read and write very fast; what costs time isseeks. Random IO means lots of seeks. In random IO on a striped RAID,this means that any time you have to touch a new disk you pay anadditional seek cost. And you switch disks every time you cross astripe boundary.
The danger of specific errno values
accept() . If
答留言.薦書
暉:
你說的話我並不完全反對。確然很多人都將韓農想像成受難者,好像他們不是受難者,或者有更苦的受難者,韓農就不值得支持。不過,我認為你也是抱持這種邏輯的人。否則,你發現中國農民比韓國農民更慘,那
到了深夜,仍然有人會令我食慾不振
Weekly spam summary on January 14th, 2006
How not to set up your DNS (part 8)
我想身體健康,我想不必服藥,我想我們都命賤
Writing HTML considered harmful
如有雷同,實屬抄我!
今天好友發現“新澳門學社”的網頁有人把
An unconventional reason for large RAID stripe sizes
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