Amazon Web Services SES integration with existing AWS-- EC2

I have an Amazon Web Services EC2 CentOS linux server currently configured with Sendmail, Dovecot, Postfix and sites leveraging PHP. I've recently hit an issue with sending/receiving e-mail, and to help resolve the issue, I need someone who can either: a.) resolve my current mail delivery issues -- or -- b.) resolve and then integrate Amazon Web Services SES (email services) with my current configuration.