Integrating Amazon Simple Email Service with postfix for SMTP smarthost relaying.

Thu, 28 Apr 2011 12:23:47 +0000

How I configured an EC2 instance to relay mail through Amazon’s SES, and some of the bumps I encountered along the way.

Relaying through Google Apps using Sendmail to bypass EC2 spam blockage

Wed, 01 Dec 2010 14:48:06 +0000

Update 3 May 2011: I’ve subsequently modified our EC2 systems to relay SMTP mail through Amazon’s SES which doesn’t have the 500 messages per day limit that Google Apps does.

A few months ago I moved a site into EC2. I didn’t want to move the existing IMAP server (ugh) so I moved the email to Google Apps. There are only about 10 mailboxes so we went with “Standard” edition (free). Once we completed the move to EC2 we discovered that emails from our webserver were bouncing due to our EC2 IP address being listed in a spam RBL. This sucked, so I looked into relaying the mail from the EC2 webserver through our Google Apps account. Fortunately this turned out to be pretty easy.

Sendmail on Evan Hoffman

Integrating Amazon Simple Email Service with postfix for SMTP smarthost relaying.

Relaying through Google Apps using Sendmail to bypass EC2 spam blockage