AWS SDK 2.2.36 causes crash on MAIL FROM

[RobbyZ]

When installing ses-proxy via gem / rvm, the latest AWS sdk is pulled (2.2.36).

When a mail client executes a MAIL FROM, for instance:

MAIL FROM: <asdf.com>

The server will crash:

uninitialized constant SesProxy::SmtpServer::AWS
Did you mean? Aws

Downgrading AWS SDK to 1.66.0 fixes this, however, it would be more ideal to support the latest SDK.

gem install aws-sdk --version '=1.66.0'

[maintux]

@RobbyZ I'm working on this, so I think that in this week I'll push a new version on master with support for AWS SDK 2