Possible Duplicate:
Desktop Bulk-Emailer Suggestion?
I've been tasked with sending emails to our customer list of over 100k email addresses. Could some tell me what I should do regarding the actual sending of it. Are there any things I should watch out for (such as setting up reverse-dns)? It's not as simple as just writing a program to send the emails from one of our servers is it?
Edit: I realise that I can use 3rd party services, but am currently interested in undertaking this on my own. I've heard of Fast Bulk Emailer and the like but even using this I want to know if there are things I should do to prevent my emails being bounced and my server blacklisted. I mean, how would spam filters know that these are legitimate emails and not spam?