November 25, 2015 05:27PM
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?
Subject Author Posted

SMTP Forward Nginx Proxy

chobit November 25, 2015 05:27PM

Re: SMTP Forward Nginx Proxy

Maxim Dounin November 26, 2015 08:52AM

Re: SMTP Forward Nginx Proxy

itpp2012 November 26, 2015 09:14AM

Re: SMTP Forward Nginx Proxy

Igor Sysoev February 26, 2019 06:54AM

Re: SMTP Forward Nginx Proxy

Maxim Konovalov February 26, 2019 07:14AM

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