Lani's Study Books

水瓶座： 最愛忽遠忽近　若即若離的告白

雙魚座： 對死纏爛打的求婚攻勢　最沒抵抗力

牡羊座： 看上眼的　一定是最有正義感的男生

金牛座： 喜歡選擇給她安全感的另一半

雙子座： 最重視精神層面的求愛行動

巨蟹座： 對男人無辜祈求的眼神最沒輒

獅子座： 愛她　就要讓全世界都知道

處女座： 要她說我願意　得先遵從她的完美主義

天秤座： 對思考周密的告白　最無力抗辯

天蠍座： 無法抵抗語文能力極佳的示愛

射手座： 喜歡自由奔放的求愛

魔羯座： 平實的話語　比甜言蜜語更有吸引力

因為Server不單只跑Sendmail，CPU Load易高過預設值，即造成進來的mail connecting被Refuse，
信件因而被Queue住，容易造成信件Delay，所以Tunning Sendmail Config sendmail.cf .

If CPU Load is over 10 , Sendmail will QUEUE REFUSE DELAY incoming mail .
So we need to tunning Sendmail config , reduces mail delay problem.

data from:http://techgurulive.com/2008/09/15/sendmail-how-to-queue-mails-based-server-load-average/

There has been a lot of web debates and arguments which STMP email server works better, safer and faster. Not to discredit any other SMTP armies on the field, but I do often hear people debating about how difficult for them to configure Sendmail on time. Probably sendmail should be repackaged with a little teaspoon drop of sweet patience into it, so those mingling crowd could can get the taste better than they used to have.

In reality Sendmail is very easy to configure and flexible. Sendmail growth continuous to evolve as the crowd needs continue on demanding. Have you ever heard of Sendmail Engineer job position that only works with Sendmail setup and configuration? Just imagine what kind of sendmail job this sendmail engineer is usually doing.

Here are a few sendmail configuration tweaks that you can play with on queueing up incoming and new SMTP connection based on server’s current load average value.

Sendmail Directive Configurations

Most sendmail directives does not come with its default sendmail rpm installation. Here are a few of sendmail directives that you could manage to control, delay and queue incoming SMTP connections based on current server load average.

Sendmail directive: confQUEUE_LA

One trick you can play along with sendmail configuration setup is on how you could tweak sendmail to queue incoming mails and put on hold, rather than queue them up immediately for delivery if a certain sendmail rules is met. The below sendmail directive considers current server’s load average value as a basis to put new and incoming emails on hold.

define(`confQUEUE_LA’, `10′)dnl

If the server’s load average value increases to or more than 10, then sendmail is then instructed to put all incoming emails on queue for hold, instead of delivering all new incoming emails for delivery. The sendmail directive is active until the server’s load average value decreases down below 10.

Sendmail directive: confREFUSE_LA

Now, if you want to tweak sendmail to stop accepting any new incoming SMTP connections and mails based on server load average value, you could make use of the below sendmail configuration directive as shown below

define(`confREFUSE_LA’, `15′)dnl

The above instructs sendmail to completely stop accepting new and rejecting incoming SMTP connections if and only the current server load average reaches and stays 15 or above.

Sendmail directive: confDELAY_LA
Now, to throttle SMTP connections, we can make use of the below sendmail directive

define(`confDELAY_LA’, `5′)dnl

The server load average value of 5 is a sendmail directive trigger point at which sendmail is instructed to sleep for one second on most SMTP commands and before accepting SMTP connections again. 0 means no limit.
When modifying sendmail configuration file /etc/mail/sendmail.mc, always remember to restart sendmail service to take effect the new changes from sendmail directives.

To recompile sendmail.mc sendmail configuration file

# m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf

To restart sendmail service

# service sendmail restart

To monitor sendmail logs

# tail -f /var/log/maillog

To monitor queued mails

# mailq

There are a lot more sendmail directives and M4 sendmail variables that are just waiting to be configured and changed.

當天10幾個同事都沒裝備，只有一個同事有觀測眼鏡，大家只好輪流看~~真可惜。
只好使用網友的圖片來紀錄一下，並期待下一次。

先看別人拍下的紀錄：http://www.mobile01.com/topicdetail.php?f=248&t=1153194

資料引用：http://chinese.engadget.com/2009/07/21/total-solar-eclipse-china/






下一次的行徑：
資料引用：http://chinese.engadget.com/2009/07/22/the-eclipse-is-over-whats-next/
下次台灣可能出現的日期：2020 年 6 月 21 日

今天去吃了一間燒肉，他的肉都沒經過加工，
原味肉直接下去烤，再沾店內特調沾醬汁，真的很好吃。
店內環境乾淨，冷氣放送，排煙良好，不會整間都燒肉味，
推薦給大家，不想讓好吃的店沉沒，大家有空記得光顧一下。

平均客單價是400~600元左右,初次來的朋友可以聽聽老闆的建議喔,保證滿意!
PS:加開一支訂位電話~02-2831-8200,
營業時間:每日下午5:00~11:00,全年無休
店址:福國路69號(位於芝山捷運站對面,旁有捷運停車場)





網友的分享：
http://blog.xuite.net/cedarsu/cedarsublog/9956721
http://blog.xuite.net/kate2008/97060801/22686257
http://valence.pixnet.net/blog/post/22342527

忙錄的生活過累了，
大多數的人都嚮往可以放慢腳步，
讓自已可以自慢、自遊。

http://www.partake.com.tw/magazine/

好看的廣告~

Cisco 為了整合ESX上的虛擬機器，設計了一台在 VMware ESX 平臺上的虛擬交換器產品 ── Nexus 1000V，

其應用特點應該在其VLAN Tag的部份，解決Virtual Machine VMotion時，VLAN Port的對應。

個人覺得這個設計還蠻不錯的。但較麻煩就是每台ESX都要裝VEM，要有Cisco Switch Config 經驗者使用較佳, 也可以照Cisco intall guide 練習，目前我也僅先測試到此階段。

要測試的話，記得先去Cisco 國外網站註冊帳號才可下載測試。

可參考以下幾個連結：
VMware Support Center
http://www.cisco.com/en/US/docs/switches/datacenter/nexus1000/sw/4_0/install/software/guide/install_n1000v.html




資料引用：http://www.ithome.com.tw/itadm/article.php?c=52712&s=2