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by dpifke 896 days ago
Gmail now requires mail forwarders to cryptographically attest to the original DMARC alignment of forwarded mail: https://support.google.com/mail/answer/81126?hl=en

Your former university may be using mail software that doesn't support ARC (https://www.rfc-editor.org/rfc/rfc8617) or they've decided setting it up isn't worth it.
1 comments
vinnrex 895 days ago
Thank you for putting me onto ARC. It seems that it was only finalized in 2019? Perhaps that might be why they might not be as informed of it. If one was to go about guiding the university on this, is there a place for me to start looking into this? From my current understanding, ARC signing requires an intermediary server? Is there a list of open source software that enables this?
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dpifke 894 days ago
Documentation for ARC is pretty sparse.

The instructions for setting it up in Exim (default MTA on Debian systems) can be found here: https://github.com/Exim/exim/blob/master/doc/doc-txt/experim...

(AFAICT, there is absolutely no mention of ARC in the main Exim documentation: https://exim.org/docs.html)

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