SMTP Forward Nginx Proxy

[prasad.walke@freshgravity.com]

I would like to setup an nginx configuration which accepts SMTP connections
to it and then proxies them to another IP address (the third-party SMTP
service) so the requests to the mail server always appear to the third-party
SMTP service as if they came from the same server. 

Is it possible to solve this issue with ngingx smtp proxy?

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,283168,283168#msg-283168