I have 2 VPS / with root access, and one Dedicated server that needs to be setup properly for signing and sending proper email.
Setup proper SPF Keys record. If none
Setup Domains key
Verify that mail from all servers go through the following, Yahoo, Hotmail, GMail and AOL. AS NO SPAM
VPS1 / + - 15 domains on it.
DDS2 / + - 4 domains on it
VPS3 / + - 2 domains on it.
Using QMail, Sendmail, from plesk [url removed, login to view]
Max budget 65$