WHM / CPanel Server Security Expert Needed

I am looking for somebody who can secure my dedicated server, it\'s ran with WHM (CENTOS 5.9 x86_64 standard – hosting WHM 11.38.1 (build 15)) I have been having problems with SPAM e-mails being sent out from an account, I have tried every avenue to my ability and need somebody to come in and trace any malicious scripts, remove them and secure my server from this in the future. I\'d also like a full system scan to find anything malicious, also any security upgrades in any other area that the candidate sees fit. The information I have on the spam e-mails are: Event: success success User: **** Domain: **** Sender: **** Sent Time: Aug 9, 2013 10:31:10 AM Sender Host: **** Sender IP: [login to view URL] Authentication: dovecot_login Spam Score: Recipient: Delivered To: Delivery User: -remote- Delivery Domain: Router: lookuphost Transport: remote_smtp Out Time: Aug 9, 2013 10:32:10 AM ID: 1V7j31-0006Jp-5c Delivery Host: [login to view URL] Delivery IP: [login to view URL] Size: 1.47 KB Result: Message accepted Somebody with a lot of experience is necessary and I am looking for something on a quarterly basis to do housekeeping on the server. This is a one-off payment, I will not pay hourly, I would like the following: SPAM traced, secured and prevention for the future Full system scan and any malicious files removed without causing disturbance to accounts ** PLEASE DON\'T APPLY FOR THIS WORK UNLESS YOU KNOW HOW TO RESOLVE THIS ISSUE **