Home / server / Questions / 916741
In Process
unor
Asked: 2018-06-15 13:20:18 +0800 CST

Disclosure of recipient’s forward email address when my email bounces

  • 772

A few times I had a situation like this:

  1. I sent an email to [email protected].

  2. For this email, I received a delivery failure report, giving reasons like "550 5.1.1" (user unknown) or "552-5.7.0" (security issue).

  3. In this delivery failure report, a different email address is mentioned

    Mail delivery to the following recipient has finally failed:

    [email protected]

    or

    Final-Recipient: rfc822; [email protected]
    Original-Recipient: rfc822;[email protected]

So, I assume that the owner of [email protected] decided to forward emails to [email protected]. But I only learned about this email address thanks to an error. This could be a privacy problem for the recipient.

Is it standards-compliant to disclose the forward email address in this context? If yes, is there a way to prevent such a disclosure?

email

1 Answers

  1. Is there a way to prevent disclose the forward email address?

    Linux/Unix:
    Instead of direct forwarding in ~/.forward (or via aliases) forward using e.g. procmail.

    ~/.forward does not change envelope sender.
    procmail by default changes it to account doing forward. man procmailex provides an example how to avoid forwarding loops by setting and checking X-Loop: header.

    • 0