To kill Dead process

for i in `ps ax | grep D | awk {‘print $1′}`;do kill -9 $(cat /proc/${i}/status | grep PPid | awk {‘print $2′});done

To kill Zombie process

for i in `ps ax | grep Z | awk {‘print $1′}`;do kill -9 $(cat /proc/${i}/status | grep PPid | awk {‘print $2′});done

To find ddos attack

netstat -an |grep 80

netstat -plan|grep :80|awk {‘print $5′}|cut -d: -f 1|sort|uniq -c|sort -nk 1

netstat -plan|grep :25|awk {‘print $5′}|cut -d: -f 1|sort|uniq -c|sort -nk 1

watch -n 5 ‘w; ls -alS /usr/local/apache/domlogs/ ‘

Top memory consuming processes

ps aux | head -1;ps aux –no-headers| sort -rn +3 | head

Number of exim connections

tail -1000 /var/log/exim_mainlog |grep ‘\[' |cut -d[ -f2 |cut -d] -f1|sort -n |uniq -c |sort -n

To find cppop attack

tail -1000 /var/log/maillog | grep host= | cut -d= -f2| cut -d” ” -f1|sort -n |uniq -c |sort -n

To find number of httpd connections

netstat -plan|grep :80|awk {‘print $5′}|cut -d: -f 1|sort|uniq -c|sort -nk 1

or

netstat -pan | sort +4 | grep TIME_WAIT | awk ‘{print $5}’ | sed -e s/’:.*’//g | sort | uniq -c | sort -k 1 -nr | head -n 20

Script to search any hacking or malicious script

VECTORS=”r57sh c99sh h00ly 0wn3d rst.void.ru”

VECTORS_FINAL=$(echo $VECTORS | sed ‘s/\ /\|/g’)

find /home/*/public_html/ -type f -exec grep -Eil “$VECTORS_FINAL” {} \; >> vresult

Park domain error

Remove the entry of that park domain from these files and try to park the domain again.

/var/cpanel/users

/etc/httpd/conf/httpd.conf

/etc/localdomains

/etc/userdomains

/etc/valiases/

/etc/vdomainaliases

/var/named

/etc/named.conf

/etc/passwd

/etc/shadow

/etc/trueuserdomains

/etc/trueuserowners

/etc/vfilters

/etc/vftp

/etc/vmail

Outllook configuration

Follow the below instructions for configuring the outlook 2003.

1. In outlook, select Tools/Email accounts

2. On the E-mail Accounts wizard window, select “Add a new e-mail account” and click Next.

3. For your server type, select “POP3″ and click Next.

4. On the Internet E-mail Settings (POP3) window, enter your information as follows:

Your Name

Enter your first and last name.

E-mail Address

Enter your e-mail address.

User Name

Enter your e-mail address, again.

Password

Enter the password you set up for your e-mail account.

Incoming mail server (POP3)

Enter mail.yourdomain.com

Outgoing mail server (SMTP)

Enter mail.yourdomain.com

Click “More Settings.”

5. On the Internet E-mail Settings window, select the “Outgoing Server” tab.

6. Select “My outgoing server (SMTP) requires authentication.”

7. Click the Use same as my incoming mail server button

8. Click the Advanced Tab

9. Change the “Outgoing server (SMTP)” port to 25. If your ISP blocks access to port 25 you can use port 26.

10. Click OK.

11. Click Next.

12. Click Finish.