Monitoring Incoming & outgoing mails in zimbra

 Here is how to configure a particular mail id to hold a record of all either incoming,or outgoing mails from a particular server or a particular email 
 id in Zimbra.

 Source -> http://www.postfix.org/ADDRESS_REWRITING_README.html#auto_bcc
        -> http://www.zimbra.com/forums/administrators/28958-solved-sender_bcc_maps-not-receiving-mail-lt.html    

 Changes in /etc/postfix/main.cf :
 #Add following line to get a bcc copy to your email id when some one send a mail:
   sender_bcc_maps = hash:/etc/sender_bcc
 #Add following line to get a bcc copy to your email id when some one receive a mail:
   recipient_bcc_maps = hash:/etc/recipient_bcc
 :wq!

 # vim /etc/sender_bcc
   @domain.com outgoing@domain.com                  #to get sent mails of whole server
   user@domain.com user_outgoing@domain.com         #to get sent mails of particular user

 # vim /etc/recipient_bcc
   @domain.com imcoming@domain.com                  #to get received mails of whole server
   user@domain.com user_incoming@domain.com         #to get received mails of particular user

 Now run the following commands
 # /opt/zimbra/postfix/sbin/postmap /etc/sender_bcc
 # /opt/zimbra/postfix/sbin/postmap /etc/recipient_bcc
 # /opt/zimbra/postfix/sbin/postfix reload 

---DONE--- Working fine on TIPL**