I've mananged to setup a VPS server with Linux and have configured the Oempro mailing system from Octeth.com. Sending emails to one person works great, but when sending to bulk using the software campaign it doesn't deliver. Now I've been trying to figure out what's wrong, without any luck, so i might as well ask someone instead.
I noticed that you had experience in this field, and maybe you'd be able to help. This should not be a big job, but i guess there's something missing in the VPS setup.
Would you be able to review the setup to see what's wrong, and fix the whatever is causing this emails not being delivered?