I'm trying to get our old rhel3 servers relaying out with sendmail 8.13.1
I have followed amazon's guide here: http://docs.aws.amazon.com/ses/latest/DeveloperGuide/sendmail.html
But it seems the server does not authenticate correctly with amazon, the bounced back email states a "<<< 530 Must issue a STARTTLS command first" - as in something is not happing in the correct order.
My sendmail.mc: http://pastebin.com/k0Y1s6pZ
Any help is appreciated