I have an smtp relay setup in our environment. We use this successfully from all our ubuntu and windows boxes. We have verified there are no firewall issues.
When I am trying to test sending an email it returns the below. This is holding up our launch. since we cannot reset user passwords without this.
Error:The following From address failed: xxx@xxxx.com : MAIL FROM command failed,Send hello first ,503,5.5.2SMTP server error: MAIL FROM command failed Detail: Send hello first SMTP code: 503 Additional SMTP info: 5.5.2SMTP server error: MAIL FROM command failed Detail: Send hello first SMTP code: 503 Additional SMTP info: 5.5.2