did this recently on EC2 and found these helpful
http://pauldowman.com/2008/02/17/smtp-mail-from-ec2-web-serv...
http://www.practicalclouds.com/content/guide/sending-email-e...
DKIM on Ubuntu - https://help.ubuntu.com/community/Postfix/DKIM
Microsoft SPF record creation wizard - http://www.microsoft.com/mscorp/safety/content/technologies/...
not sending that much mail, but noticed after setting up SPF/DKIM/reverse DNS that the mail I sent to myself didn't end up in spam folders at gmail and hotmail etc., without having to send via a service like authsmtp.com.
did this recently on EC2 and found these helpful
http://pauldowman.com/2008/02/17/smtp-mail-from-ec2-web-serv...
http://www.practicalclouds.com/content/guide/sending-email-e...
DKIM on Ubuntu - https://help.ubuntu.com/community/Postfix/DKIM
Microsoft SPF record creation wizard - http://www.microsoft.com/mscorp/safety/content/technologies/...
not sending that much mail, but noticed after setting up SPF/DKIM/reverse DNS that the mail I sent to myself didn't end up in spam folders at gmail and hotmail etc., without having to send via a service like authsmtp.com.