Comments on: Remove Internal Exchange Server Names and IP Addresses from Message Headers

By: Benjamin

Benjamin — Fri, 02 Feb 2024 12:37:02 +0000

Hi,
is there a possibility, to hide the IP of a webserver which sends email through MS365/ExchangeOnline via ReceiveConnector?
We allready placed the Webserver behind Cloudflare to hide the real IP to prevent DDoSing. But when this Webserver sends out Mails, it reveals the real IP of itself. Any way to prevent this?

By: Sam

Sam — Thu, 28 Jul 2022 09:50:10 +0000

Hallo
is it safe to Add-ADPermission -Identity -User “NT AUTHORITY\ANONYMOUS LOGON” -ExtendedRights “ms-Exch-Send-Headers-Routing” ??
I want to keep all headers from received emails for analyzing porpoises…

By: Prabhu

Prabhu — Tue, 28 Jul 2020 18:28:44 +0000

Dear Paul,

I want remove outlook webmail server name and version from outbound messages . These messages are exposed to the internet.

Is header firewall option prevent those messages.

Thanks
Prabhu

By: Zeeshan Afzal

Zeeshan Afzal — Tue, 05 May 2020 10:02:34 +0000

In reply to Mahelsay. Have you found the solution to this problem?

By: Robert

Robert — Fri, 31 Jan 2020 17:17:40 +0000

Before this feature existed, email with an MUA header and no internal received headers was almost exclusively spam. According to SpamAssassin’s rule statistics it’s still a very strong spam indicator and will take you about half-way to a spam classification.

By: Kyle

Kyle — Fri, 29 Nov 2019 08:04:56 +0000

In reply to Chenh Hong. For my opinion,you can use mailflow rules on EAC to remove ip address from mail header. such as X-Origination-IP

By: Kyle

Kyle — Fri, 29 Nov 2019 07:59:28 +0000

In reply to Sanya. You need to run the command on ALL your Mailbox server and EDGE server. Get-SendConnector “Your Connector Name to Internet” | Remove-ADPermission -User “NT AUTHORITY\ANONYMOUS LOGON” -ExtendedRights ms-Exch-Send-Headers-Routing

By: kimmoj

kimmoj — Tue, 05 Nov 2019 13:09:39 +0000

Great info as always, Paul, even though this was years ago now. Works great with Exchange 2016 as well though. Nice to get those unsighthly internal things away from the mail headers. Much appreciated.

By: Ronak

Ronak — Wed, 30 Oct 2019 17:17:14 +0000

Hi Paul,

How can i do same thing with O365. i believe following command only works with on-prem exchange.

Thanks,
Ronak

By: Clement Kumar

Clement Kumar — Wed, 22 May 2019 00:46:03 +0000

In reply to

Paul Cunningham

. Hi Paul, The x-originating-ip holds the information of the client IP Address that was used to send the email, would you recommend displaying this information in the header or denying it by creating a rule in Exchange that removes this from outgoing email headers, will this have any impact on email flow to external recipients? Thank you, been following your publications for years and I thank you very much for the value you bring to all Email Administrators Life. Regards, Clement