Bulkmail Server Solution - interspire

we are looking for a reliable experience expert to build a bulk mail server solution to be able to send out about 500.000 e-mails per day which will arrive in the respective mail inboxes without having blacklisted our server or ip addresses within a few hours. - Linux - Multiple IP / Domain - Interspire - web portal Admin control panel : - All in one webmailer can load unlimited lists from files ( text , CSV … Etc. ) - send by SMTP and POP3 - send the campaign in background no need to be on line to send it . - 500.000 / Day Capacity IMPORTANT!!!! FAST Communication - I don't want to wait 1-2 days to get a response from you. If you CANT solve the issue, PLEASE do not wait my and your time and don't bid!! Thanks