Opened 4 years ago

Last modified 3 years ago

#20226 new enhancement

Support DNS-MX resource records with .onion-filtering for TOR as secure/anonymous email transport protocoll

Reported by: renne Owned by:
Priority: Medium Milestone: Tor: very long term
Component: Core Tor/Tor Version: Tor: unspecified
Severity: Normal Keywords: email, DNS, MX, resource, record, term-project-ideas, prop219, prop279
Cc: Actual Points:
Parent ID: Points:
Reviewer: Sponsor:



while a lot of bright minds are working on transport and end-to-end content encryption of email, the problem of transport meta-data anonymization is still unsolved.

This can be solved by a network of private SMTP-servers interconnected via TOR hidden-services like Own-Mailbox.

The easiest way to connect the .onion-hostname of a SMTP-server with a clearnet mail-domain is to use the .onion-hostname of a SMTP-server as a primary MX DNS resource record. To avoid leaking by a fallback to the clearnet mail-servers (secondary MX records) it is very helpful if TOR is able to resolve MX-records AND remove non-.onion-domains from the MX-RRs.

Bottom-line: This would allow encrypted and anonymous email communication with TOR onion-routing as transport protocol instead of plain TCP.

Child Tickets

Change History (3)

comment:1 Changed 4 years ago by nickm

Keywords: nickm-deferred-20161005 added
Milestone: Tor: 0.2.9.x-finalTor: unspecified
Priority: HighMedium

This would make sense to do as part of any more general DNS-type expansion. Not time before the 029 freeze, though.

comment:2 Changed 3 years ago by nickm

Keywords: nickm-deferred-20161005 removed

comment:3 Changed 3 years ago by nickm

Keywords: term-project-ideas prop219 prop279 added
Milestone: Tor: unspecifiedTor: very long term
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