Mail Inbound Proccess Configuration in ECC

Hi Experts,

I have few quires regarding Mail inbound configuration.

1. Which Node we will use in SCOTT?

2. Can we use SMTP node for outgoing and in-bounding, if yes how to configure in network side [i.e,  Mail server configuration].?

Note: We don't have PI server.

Kindly provide your valuable suggestions.

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Thanks & Regards,

Vijay