smtprelay

images/smtprelay/Dockerfile

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+FROM golang:alpine AS build
+ARG GOARCH="amd64"
+
+ARG SMTPRELAY_VERSION=1.10.0 \
+    SMTPRELAY_LISTEN=0.0.0.0:25
+
+RUN set -eux &&\
+    apk --no-cache upgrade &&\
+    apk --no-cache add git libcap &&\
+    cd /tmp &&\
+    git clone --depth 1 --branch v${SMTPRELAY_VERSION} https://github.com/decke/smtprelay.git &&\
+    cd smtprelay &&\
+    go build -v -o smtprelay &&\
+    setcap cap_net_bind_service=+ep ./smtprelay &&\
+    chmod +x ./smtprelay
+
+FROM danielberteaud/alpine
+MAINTAINER Daniel Berteaud <dbd@ehtrace.com>
+
+RUN set -eux &&\
+    apk --no-cache upgrade &&\
+    apk --no-cache add tini
+
+COPY --from=build /tmp/smtprelay/smtprelay /usr/local/bin/
+
+ENTRYPOINT ["tini", "--", "/entrypoint.sh"]
+CMD ["smtprelay"]

smtprelay.nomad.hcl

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+job "smtp-relay" {
+
+  datacenters = [[ .nomad.datacenters | toJSON ]]
+
+  group "smtp-relay" {
+    network {
+      mode = "bridge"
+    }
+
+    service {
+      name = "smtp-relay[[ .env.suffix ]]"
+      port = 25
+
+      connect {
+        sidecar_service {}
+        sidecar_task {
+[[ template "common/resources.tpl" .mail.relay.resources ]]
+        }
+      }
+    }
+
+    task "smtprelay" {
+      driver = [[ .mail.relay.driver | toJSON ]]
+
+      config {
+        image = [[ .mail.relay.image | toJSON ]]
+      }
+
+      env {
+        SMTPRELAY_REMOTES = "[[ .mail.relay.remote.protocol ]]://
+                               [[- if and (has .mail.relay.remote "user") (has .mail.relay.remote "password") ]]
+                                 [[- .mail.relay.remote.user ]]:[[ urlquery .mail.relay.remote.password ]]@
+                               [[- end ]][[ .mail.relay.remote.host ]]:[[ .mail.relay.remote.port ]]"
+        [[- if has .mail.relay "allowed_senders" ]]
+        SMTPRELAY_ALLOWED_SENDER = "[[ .mail.relay.allowed_sender ]]"
+        [[- end ]]
+        [[ template "common/env.tpl" .mail.relay.env ]]
+      }
+
+      resources
+    }
+  }
+}