Mail Proxy Server using NGINX

Nginx is open source software for web serving, reverse proxying, caching, load balancing, media streaming, and more. NGINX is highly scalable as well, meaning that its service grows along with its clients traffic.

NGINX can proxy IMAP, POP3 and SMTP protocols to one of the upstream mail servers that host mail accounts and thus can be used as a single endpoint for email clients. This may bring in a number of benefits, such as

Easy scaling the number of mail servers

Choosing a mail server basing on different rules, for example, choosing the nearest server basing on a client’s IP address

Distributing the load among email servers

Mail Proxy Features

POP3/SMTP/IMAP over SSL/TLS

Optimised SSL/TLS for mail Proxy - Faster & more secure

Load balance mail server traffic

Load balancer in-band health checks

Reverse proxy support

Test your TCP mail upstream servers

Keep-alive and pipelined connections support

Access control based

Response rate limiting

HTTP authentication (LDAP)

STARTTLS support

TLS/SSL with SNI and OCSP stapling support, via OpenSSL

NGINX can also be used as a cache for static and dynamic content. Increasing the speed for users access.

Mail Proxy Support / Documentation

Follow the post setup instructions on our website - Setup NGINX Mail Proxy on Azure

Nginx Ports

The following ports are enabled.

TCP - 80

TCP - 443

Disclaimer: This solution is built using Nginx, Inc. and its contributors, an opensource software. This solution is Licensed under the 2-clause BSD license.