換車熱潮
Comments (0) 最近頻頻發現樓下和附近的鄰居都在測試二手超跑，而且幾乎清一色都是08/09年版的林寶Gallardo，都說5年車齡的超跑是最”抵玩”的了。
這台帶尾翼透明引擎蓋橙色的Superleggera也不例外，唯一就是車主看樣子應該之前沒有駕駛過超跑的經驗，所以看來他比較生手，有點戰戰兢兢的感覺。
Comments (0) 
賣車心得
By admin, May 27, 2014 6:31 pm
最近忙於出售我那堆珍藏，因此接觸了不少形形色色的收藏家，幸運的是不見了一批對品質要求極高的人群，可能跟我廣告裡的一早聲明有關。
總的來說，原來江湖上那句是真的: 買絕版難，賣絕版更難，沒有最難，只有更難!!!
A Simple Anti-Spam Technique That Works!
By admin, May 27, 2014 6:25 pm
Out of blue, after years of searching for the best way to prevent spammer from inside. I think I probably found the solution by extending Delay between Recipients to 5 seconds on Outgoing SMTP, which keeps the email password cracker away. 
It’s really more a mind tactic than the actual technical solution, as the spammer will give up right away if they find your SMTP server is so slow sending out emails per second. I strongly suspect they have a set of standards, say if a SMTP server can’t deliver more than 10 email per second, then they won’t use it…after all, why bother to use a slow SMTP while they are plenty powerful ones out there.
In contrast, by using Grey Listing on incoming SMTP also greatly reduced the spam or email DDOS by a large percentage.
Just my 2 cents.
Update: Jan 16, 2018
Today client’s email server had a DDOS attack, one of the users got tens of thousands of email and this made the spooler almost crashed, hence CPU stays at 100%. Solution is to decrease the SMTP Delay from 5 seconds to 1 second, so the email server can quickly bounce back the email (of course, remove that user temporarily).
Lesson learned, Delay SMTP delivery may cause dearly at a specific occasion, so use it wisely according to the actual filed scenario.
Sponsored By
