Add port number specified by port in properties file to use a different SMTP port.
Background:
 - Amazon (may be) throttling traffic on port 25 with their SES leading to connection timeouts for ERT
 - They advertise other ports which are not throttled, so we will try one of those
change log level to debug
Merge pull request #324 from CruGlobal/email-timeouts

Add port number specified by port in properties file to use a different ...