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Add outbound DKIM signing #13

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ober merged 2 commits from security/outbound-starttls into main 2026-08-21 15:01:46 -04:00
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ober commented 2026-08-21 14:54:48 -04:00
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Implements optional outbound DKIM signing for local pickup and authenticated submission.

Changes:

  • Adds dkim_signing_domain, dkim_signing_selector, and dkim_signing_key_path config fields.
  • Signs outbound queued payloads with RSA-SHA256 relaxed/relaxed when all signing fields are configured.
  • Fails queue admission rather than sending unsigned mail when configured signing cannot be performed.
  • Adds DKIM signing coverage without tracked private-key fixtures, plus config validation tests.
  • Bumps VERSION to 0.8.0.

Verification:

  • scripts/daemon-security-check.sh
  • make binary
  • make test
  • ./jsmtp native-version
Implements optional outbound DKIM signing for local pickup and authenticated submission. Changes: - Adds dkim_signing_domain, dkim_signing_selector, and dkim_signing_key_path config fields. - Signs outbound queued payloads with RSA-SHA256 relaxed/relaxed when all signing fields are configured. - Fails queue admission rather than sending unsigned mail when configured signing cannot be performed. - Adds DKIM signing coverage without tracked private-key fixtures, plus config validation tests. - Bumps VERSION to 0.8.0. Verification: - scripts/daemon-security-check.sh - make binary - make test - ./jsmtp native-version
Add outbound DKIM signing
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Avoid secret fixture in DKIM signing test
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ober scheduled this pull request to auto merge when all checks succeed 2026-08-21 15:01:02 -04:00
ober merged commit bf4c9a9bbd into main 2026-08-21 15:01:46 -04:00
ober referenced this pull request from a commit 2026-08-21 15:01:48 -04:00
Merge pull request #13
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