Email is not going out from Direct project gateway

[anil jain]

My direct project sudden stopped sending email as I am trying to send an SMTP email to ETT's email I'd. Earlier it was working.

I have added it's trust anchor also in my direct project instance.

When I checked in gateway outgoing folder it's showing there eml file but I also found an eml file in incoming folder with status Rejected.

Attaching that outgoing & incoming file. 

From email ID: en...@enkiworld.com

To: direct-clinical-summary@ttpedge.sitenv.org

Please help me into this.

Thanks