電腦 | Tim K.C. Leung & Sin Y.S. Tin

Add Google Calendar to Thunderbird

Post Author:Tim
Post published:May 3, 2013
Post Category:E-mail / 電腦
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Add Google Calendar to Thunderbird http://www.maketecheasier.com/integrate-google-calendar-to-thunderbird/2011/10/14

Notes on PHP handlers

Post Author:Tim
Post published:April 16, 2013
Post Category:WebServer
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Comparison Graph DSO CGI SUPHP FASTCGI Low CPU usage ✔ ✔ Low Memory consumption ✔ ✔ ✔ Runs PHP as site owner instead of Apache ✔ only w/ suEXEC ✔…

Notes about Spamassassin

Post Author:Tim
Post published:April 16, 2013
Post Category:E-mail
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The default rules set location: /var/lib/spamassassin/some_version_here/updates_spamassassin_org The custom rule set location: /etc/mail/spamassassin/ To update Spamassassin default rules set: sa-update -D

STARTTLS vs SSL vs TLS

Post Author:Tim
Post published:March 26, 2013
Post Category:Security / 電腦
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I have confused for many time about these three terms, STARTTLS vs SSL vs TLS. Therefore, I did some research and summarize them in short. STARTTLS is a way to use an existing insecure connection…

Thunderbird – Outlook-style reply headers

Post Author:Tim
Post published:March 25, 2013
Post Category:電腦
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By default, Thunderbird shows only the Date and sender's name when you reply a mail. The information is not enough when you would like to trace e-mail conversion later on.…

Choice of Apache 2.4 MPM

Post Author:Tim
Post published:January 27, 2013
Post Category:WebServer
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For a super fast request/response, choose Prefork MPM, but RAM killer For a super fast concurrency-tagged server, choose Event MPM Reference: http://www.serverwatch.com/server-news/apache-2.4-delivers-more-performance.html Difference between MPM in Apache

Use MySQL ON DUPLICATE KEY UPDATE to update data in insert SQL statement

Post Author:Tim
Post published:September 7, 2012
Post Category:Database / 電腦
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If you get a SQL dump of a database table and want to update part of the data into existing table, you can use the following SQL statement to achieve…

Test a e-mail by Spamassassin manually and get spam report

Post Author:Tim
Post published:August 22, 2012
Post Category:Linux / 電腦
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If you want to test a e-mail or test whether the spamassassin rule is working or not, you can use the following command spamassassin -t /the_message.txt Then you will get…

Exim: update the recipient of a e-mail message in the query

Post Author:Tim
Post published:June 23, 2012
Post Category:Linux
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1. check the exim mail query by specific the sender or recipient Sender: exiqgrep -f sender@domain.com Recipient: exiqgrep -r recipient@domain.com 2. Get the message_id from above and add…

Notes on resizing file system in LVM (Shrink)

Post Author:Tim
Post published:June 7, 2012
Post Category:Linux / Storage / 生活
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1. Umount the filesystem and check it with e2fsck umount /var/lib/vz e2fsck -f /dev/mapper/pve-data 2. Re-size the file system of /dev/mapper/pve-data (Let said to 500GB) resize2fs /dev/mapper/pve-data 500G 3. Resize the Logical Volume of…