How to do mail proxy?

Question

linux

It is necessary to make a unique mail for each service in which there will be registration. For example, there is a domain for mail "name.mail" and for each service the address "has service [email protected]" is allocated. When this service sends a notification to the mail or something else, then all letters should transparently come (without any logs, it was not possible to send it so let it be) ... to one email, and also if you answer from this email to which it came, then in the sender the hidden email should not be lit, but the intermediate email should be indicated.
At the moment, the selection of a unique
The email for each service is done using the address extension "name+(private key . service name) as [email protected]". But when answering in this approach, a clean email without an extended address is indicated, which is not good, and also such an email does not pass validation in some services, which is strange since this is an Internet standard.

Answer 1

• On the example.com domain, forward to gmal.com
  
• Accounts and import to gmail.com add mailbox (previously on example.com - publish smtp+pop3|imap4