Almost all of our customers send e-mail through our private SMTP servers, but we have one customer who chooses to use a third-party SMTP provider. The third-party SMTP service requires whitelisting of any sending IP addresses which is normal. Unfortunately the components in our infrastructure which send e-mail are part of an autoscaling group so the IP addresses can vary. To solve for this problem 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? How should i forwarded smtp in case with third-party SMTP service? Posted at Nginx Forum: https://forum.nginx.org/read.php?2,263084,263084#msg-263084 _______________________________________________ nginx mailing list [email protected] http://mailman.nginx.org/mailman/listinfo/nginx
