An unsurprising discovery about spammer behavior
Here's a recent, not entirely surprising discovery about spammerbehavior: some spammers are really slow to pick up DNS updates.
We changed MX entries to point to our new SMTP frontend on late Monday afternoon. Our MXentries had the standard 24 hour timeout and our secondary servers hadupdated to the new zones by Tuesday morning at the latest, so by nowit is more than two days after our old MX entries were required tohave been purged from caches, even if they were gotten from asecondary using
保留天星運動新聞稿：告全香港市民書
(相片:柏齊)
尊重歷史文化 從保留天星開始 立即停工
民主參與規劃 不容拘捕打壓 立即撤銷控罪
我們是一群關注香港政治、文化和歷史的普通市民。這兩天在天星碼頭堅持不走並獲得一般市民的支持，並非只為保存一件建築物，
Fedora Core's memory problem
; chkconfig --list autofs
service autofs supports chkconfig, but is not referenced in any runlevel (run 'chkconfig --add autofs')
; rpm -U autofs*.rpm
[...]
; chkconfig --list autofs
autofs 0:off 1:off 2:off 3:on 4:on 5:on 6:off
Is it too much to ask that Fedora Core remember what services Iwant and don't want running over package upgrades? Apparentlyit is, because this happens
天星人鏈
圖片來源：成報這是12月13日
驪歌
到達依靠走動
到達的意義
是什麼
未存在之地，虛托的歌
因為無法安心描述
我們在家中書桌上
各自寫了又寫
走過的路徑都回復空曠
灣仔海邊沒有留下我們
身上海水曾經襲擊，它們沒有料到
這改變了衣衫的物料
不再安於表面。
有
A SMTP implementor's conundrum
Today I ran across a good example of the sort of engineering conundrumthat bedevils people who implement things like SMTP clients:
In a multiline SMTP reply , which replycode should you use if different lines of the reply have differentcodes?
That is, in a regrettably non-hypothetical example, if you send aserver ' Should your client go on and send a If you walk up to the console of some Linux machines that have theircapslock turned on and try to log in, an interesting thing happens: (This works with Ubuntu 6.06, but not with Fedora Core 6.) Why does this happen? Once, long ago, there were terminals that only did upper case, and therewere people who wanted to connect them to Unix systems. So Bell Labs puta We put a new SMTP frontend machine in front of our core mail servertoday to handle incoming email from the outside world (for the usualreasons: dealing with spam better, shielding the core server fromsix zillion zombies all trying to talk to it at once, etc). Rather than wait for updated MX entries for all our domains to propagatearound and for people to switch to them, we figured we could speed upthe process by having our bridging firewall send connections for the coreserver's port 25 MAIL FROM:250-There's a problem.454 please try later
RCPT TO ,
An example of Unix's slow fossilization
keyx login: CKSPASSWORD:[...]CKS@KEYX:~$
嘉賓：陳順馨、韓小雲
訪問中讀的飲江詩今晚上載。在對內地孕婦的抹黑之下，加倍需要對女性生產的敬意。
****
蘋果日報報導了卡夫卡的消息，這份報導經各方努力才成事，文化推廣眾志成城。唯文
A limitation of OpenBSD bridging NAT firewalls
粉絲時間
Menu