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Replace subject with [...] for outgoing mail #481

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@link2xt link2xt commented Jan 29, 2025

authclean cleanup server is used by
reinjecting smtpd running on localhost:10025 by default. It runs after filtermail
and currently removes Received header
to avoid leaking IP address.
Can as well be used to replace Subject lines
with Subject: [...].
If there are multiple Subject lines,
all of them should be replaced.

This allows us to avoid dealing with
localized subjects, including SecureJoin
messages vc-request and vg-request
which can have Subject lines like
Subject: =?utf-8?q?Nachricht_von_nrn178fi4=40nine=2Etestrun=2Eorg?=

@link2xt link2xt force-pushed the link2xt/replace-subject branch from 05392d4 to 7fe2f3a Compare January 29, 2025 00:13
@link2xt link2xt marked this pull request as draft January 29, 2025 00:13
`authclean` cleanup server is used by
reinjecting smtpd running on localhost:10025 by default.
It runs after filtermail
and currently removes `Received` header
to avoid leaking IP address.
Can as well be used to replace `Subject` lines
with `Subject: [...]`.
If there are multiple `Subject` lines,
all of them should be replaced.

This allows us to avoid dealing with
localized subjects, including SecureJoin
messages `vc-request` and `vg-request`
which can have Subject lines like
Subject: =?utf-8?q?Nachricht_von_nrn178fi4=40nine=2Etestrun=2Eorg?=
@link2xt link2xt force-pushed the link2xt/replace-subject branch from 7fe2f3a to 552fe0f Compare January 29, 2025 00:27
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