v0.3.0

0.3.0 (2026-10-01)

Features

• Added metrics (942496c)
• support for externalsecret (fc0aeb1)

Bug Fixes

• fixed metrics for cleanup (97d1410)

Docker image

ghcr.io/wenisch-tech/smtp2x:0.3.0
ghcr.io/wenisch-tech/smtp2x@sha256:b37abd0722f5bc33c23a796d86b886e3de4f59a55db0ac969aa0f33f4a2be121

Helm chart

helm install smtp2x oci://ghcr.io/wenisch-tech/helm-charts/smtp2x --version 0.3.0

SBOM

CycloneDX JSON and XML SBOMs are attached as smtp2x-0.3.0-sbom.json and smtp2x-0.3.0-sbom.xml.

Signature and attestation verification

The image and release artifacts are signed keylessly with Sigstore Cosign. The container also has GitHub build provenance attached.

Verify the image signature:

cosign verify ghcr.io/wenisch-tech/smtp2x@sha256:b37abd0722f5bc33c23a796d86b886e3de4f59a55db0ac969aa0f33f4a2be121 \
  --certificate-identity-regexp="https://github.com/wenisch-tech/SMTP2X" \
  --certificate-oidc-issuer="https://token.actions.githubusercontent.com"

Verify the build provenance:

gh attestation verify oci://ghcr.io/wenisch-tech/smtp2x@sha256:b37abd0722f5bc33c23a796d86b886e3de4f59a55db0ac969aa0f33f4a2be121 \
  --repo wenisch-tech/SMTP2X

Verify the Helm chart signature after downloading the chart and its .cosign.bundle from this release:

cosign verify-blob smtp2x-0.3.0.tgz \
  --bundle smtp2x-0.3.0.tgz.cosign.bundle \
  --certificate-identity-regexp="https://github.com/wenisch-tech/SMTP2X" \
  --certificate-oidc-issuer="https://token.actions.githubusercontent.com"

Verify the application JAR in the same way:

cosign verify-blob smtp2x-0.3.0.jar \
  --bundle smtp2x-0.3.0.jar.cosign.bundle \
  --certificate-identity-regexp="https://github.com/wenisch-tech/SMTP2X" \
  --certificate-oidc-issuer="https://token.actions.githubusercontent.com"