Educause Security Discussion mailing list archives
Re: Notifications of external emails
From: Valdis Kletnieks <valdis.kletnieks () VT EDU>
Date: Wed, 8 Feb 2017 19:28:39 -0500
On Wed, 08 Feb 2017 11:43:30 -0500, Frank Barton said:
The problem comes then from modifying the body of the message, and that can invalidate digital signatures (DKIM, S/MIME for example)
Not sure what can be done for a DKIM that covers Subject: if you rewrite it. The simple trick to avoid breaking S/MIME is to restructure the message, and wrap it in more mime: --multipart/related -- your informational message header here -- the original S/Mime/pgp/whatever here -- text/plain message body -- application/digital-signature I'm pretty sure that MailMan is able to do the restructuring. LSoft's Listserv product and GMail don't try to do it. You want it as a header, not a footer, so they read it before they read the phish not after..
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Current thread:
- Notifications of external emails Thomas Carter (Feb 08)
- Re: Notifications of external emails Napier, Mark E (Feb 08)
- Re: Notifications of external emails Thomas Carter (Feb 08)
- Re: Notifications of external emails Harris, Brent (Feb 08)
- Re: Notifications of external emails Frank Barton (Feb 08)
- Re: Notifications of external emails Thomas Carter (Feb 08)
- Re: Notifications of external emails Valdis Kletnieks (Feb 08)
- Re: Notifications of external emails Thomas Carter (Feb 08)
- Re: [EXTERNAL] Re: [SECURITY] Notifications of external emails Cecka, Benjamin (Feb 08)
- Re: [EXTERNAL] Re: [SECURITY] Notifications of external emails Frank Barton (Feb 08)
- Re: [EXTERNAL] Re: [SECURITY] Notifications of external emails Klein Keane, Justin (Feb 08)
- Re: [EXTERNAL] Re: [SECURITY] Notifications of external emails Alan Amesbury (Feb 08)
- Re: [EXTERNAL] Re: [SECURITY] Notifications of external emails Frank Barton (Feb 08)
- Re: Notifications of external emails Napier, Mark E (Feb 08)
- <Possible follow-ups>
- Re: Notifications of external emails Johnson, Kyle A (Feb 08)