Hello,
The "Received" header in an email message provides a chronological record of the message's journey as it travels from the sender to the recipient. Each "Received" header represents a step in the email's delivery process, showing the mail servers or relays that handled the message and adding information about the sender, receiver, and timestamps. Each new "Received" header is prepended to the existing list, creating a trace of the email's path.
And for your question: Yes, you can remove Received headers on outgoing mails as you shared the document above or you can use content filter to strip them.
if you have particular ip addresses to be hidden then you can use content filter action Add/Edit header to replace that ip address.
However, I would like to reiterate that removing the Received header from outgoing emails is not recommended. The Received header can be useful for troubleshooting email delivery problems. For example, if an email message is not delivered to its recipient, the Received header can be used to trace the path that the message took and identify the mail server that was responsible for failing to deliver the message.
Here are some additional things to keep in mind:
- If you are using a third-party MTA to send emails on behalf of your organization, the MTA may require the Received header to be present in order to deliver emails successfully.
- Some email servers may reject emails that do not have a Received header.
- If you remove the Received header from outgoing emails, you will not be able to troubleshoot email delivery problems as effectively.
I recommend that you carefully consider the risks and benefits before removing the Received header from outgoing emails.
