I have built/configured/secured/tweaked/fixed Linux Servers for over 14 Years now doing everything from DNS/Email/Web/FTP/SSH/SFTP/MySQL/IRC and Home Media Servers. Setup Web Servers using no control panels and Hosting Servers using plesk/cpanel/ISPConfig/Webmin and a few others. I have built custom mail gateways to filter outgoing email to help keep servers off blacklists when a valid username get compromised. If i don't already know how to do it i will learn it or point you to someone who can get it done.