: You may be asked for the exact UTC time the mail was processed.
: The lowest Received header in the list typically represents the original entry point into the mail system.
: Scan for fields like from [IP ADDRESS] or (authenticated bits=0) . 2. Identify the Forged Sender
: Often an IP from a known malicious range or a private network address that shouldn't be sending external mail.
Check the Return-Path and From fields. In many versions of this challenge:
The most critical part of the file is the Received chain. These headers track the path the email took from the sender to the recipient.
: Look for base64 encoded strings in the Subject: field; decoding these often reveals the hidden flag. Common Findings in this Challenge