That is well known. Now, who is using the X-MC-xxx header set and are they
legitimate?
{^_^}
On 20210328 21:20:17, Kevin A. McGrail wrote:
Loren,
See https://tools.ietf.org/html/rfc6648 <https://tools.ietf.org/html/rfc6648>
but basically for email think of X- as local headers, 100% allowed, do
whatever you want with them, no one should pay any attention unless you
publish what they mean. Lots of places, my firm included, add X-* headers for
various purposes.
Regards,
KAM
--
Kevin A. McGrail
Member, Apache Software Foundation
Chair Emeritus Apache SpamAssassin Project
https://www.linkedin.com/in/kmcgrail <https://www.linkedin.com/in/kmcgrail> -
703.798.0171
On Sun, Mar 28, 2021 at 11:08 PM Loren Wilton <[email protected]
<mailto:[email protected]>> wrote:
I've started seeing a number of spams with the following block of X headers
in it. I've never seen these before. While these look really fake to me
(from the content of most of them), does any real tool or site make headers
like this, or are they just from some spam tool and I can use them as a
guarantee of spam?
x-mcpf-jobid: mc.us6_13712451.1216993.5a2d921a72084.full_000003
X-MC-User: 6b669534c4be2b401d8744486
X-MC-Tags:45829
X-MC-Track:456
X-MC-Autotext:global
X-MC-AutoHtml: format
X-MC-Template: smiley
X-MC-MergeVars: {"_rcpt": "[email protected]
<mailto:[email protected]>", "fname": "John",
"lname":"Smith"}
X-MC-GM-Analytics: normal
X-MC-GoogleAnalyticsCampaign: good
X-MC-Metadata: { "user_id": "45829", "location_id": "111" }
X-MC-URLStripQS: link to <AsianBeauties Team>
X-MC-PreserveRecipients: 123
X-MC-InlineCSS: used
X-MC-Subaccount: sendgrid
X-MC-ViewContentLink: {uurl}
X-MC-BccAddress: {ourl}
X-MC-Important: notes
X-MC-IpPool: 99%
X-MC-ReturnPathDomain: server1.tech
X-MC-SendAt: "AsianBeauties Team"
X-MC-MergeLanguage: {all language}
X-MC-MergeVars: {"var1": "global value 1"}
X-MC-MergeVars: {"_rcpt": "[email protected]
<mailto:[email protected]>", "fname": "John",
"lname":"Smith"}
X-MC-GoogleAnalytics: www.domain.com <http://www.domain.com>, domain.
X-MC-Metadata: { "user_id": "45829", "location_id": "111" }
X-MC-Metadata: { "group_id": "users_active" }
X-MC-Metadata: { "_rcpt": "[email protected] <mailto:[email protected]>",
"user_id": "123" }
X-MC-Metadata: { "_rcpt": "[email protected] <mailto:[email protected]>",
"user_id": "456" }
x-mcda: TRUE
