OneHoster Web Design, Web Development

To clear the DNS cache on your computer, you need to flush the DNS caching. Instructions to flush the DNS, in accordance with your operating system, are given below :

To flush the DNS cache in Microsoft Windows (Win XP, Win ME, Win 2000):

Start -> Run -> type cmd

In command prompt, type:  ipconfig /flushdns

To flush the DNS cache in Linux, restart the nscd daemon:

Type /etc/rc.d/init.d/nscd restart in your terminal.

To flush the DNS resolver cache in Mac OSX Leopard

you can use the command dscacheutil -flushcache :
bash-2.05a$ dscacheutil -flushcache

To flush the DNS resolver cache in Mac OSX versions 10.5.1 and before

the command lookupd -flushcache will perform the same task:
bash-2.05a$ lookupd -flushcache

1. You may mark the incoming emails as "spam", on the basis of email headers and bodies, by using SpamAssassin in cPanel via:

cPanel >> Mail >> SpamAssassin

Then, you can delete them.

For this, you will need to enable SpamAssassin by clicking on the "enable SpamAssassin" button in SpamAssasin via cpanel->email->SpamAssassin. Then, set up the score that you want to give. The default is 5. It will first identify the spam based emails. Then, it increments the spam value each time it gets delivered. When the spam value reaches 6 (which is above the set score), the emails will automatically be marked as spam. The spam emails can be discarded by enabling "Spam Auto Delete' in SpamAssassin.

You can also configure SpamAssassin for various checks (Blacklisting/Whitelisting email ids, etc.).

2. Block spam using an User-level, or Account level, filtering. This is used when you are getting spam with common key words, like "watches", or spam originating from any particular email id. You can block spam using these keywords via the following options. For this, click on the "create a new filter" tab. Then, you can setup the filter according to the following examples:

• Suppose you want to block any email containing the word "watch" (the word may be in email header or body). Select "Any Header and contains" from the two dropdown menus, and enter "watch" in the blank field. Select the action to discard it, or any other option. This filter will be blocking emails containing the word "watch" anywhere in the email.
• For blocking emails from a specific email id, like This e-mail address is being protected from spambots. You need JavaScript enabled to view it :  Select "From and equals" from the dropdown menu and put  This e-mail address is being protected from spambots. You need JavaScript enabled to view it in the blank field with the appropriate action.
• For blocking emails that have keywords like "watch", "watches", "Watches", WaTches", etc.: Select "Any Header and matches regex options" from the dropdown menu. Put the appropriate regular expression in the blank field.

3. Enabling box trapper will reduce spam by forcing all people not on your white list to reply to a verification email before they can send mail to you. This will send an email back to the sender, requesting a reply to that before it is regarded as genuine. Hence, it will reduce the spam sent using scripts.