如何接收P2P SMTP消息（使用Java）？

Question

We need to set up a service that is able to receive SMTP messages.

• Only incoming ones and only from a single source
• direct end-to-end connection
• source knows destination IP
• no encryption needed since we go through a dedicated VPN

We would then need to process the messages in our Java-Based System. The server can run any Linux distro.

Does anyone have a hint / experience on how to achieve that without a lot of overhead?

Answer 1

Check out SubEtha SMTP

It looks to be pretty simple to set up a java SMTP server from their wiki and allows you to handle messages however you'd like.