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1. radicand/docker-mailserver-k3s-deployment-example.yaml

   apiVersion: v1
   kind: Namespace
   metadata:
   name: "mailserver"
   ---
   apiVersion: "v1"
   kind: "PersistentVolumeClaim"
   metadata:
   name: "mailserver-pvc"
   namespace: "mailserver"
   labels:
   app: mailserver
   spec:
   accessModes:
   - ReadWriteOnce
   resources:
   requests:
   storage: 15Gi
   ---
   apiVersion: "v1"
   kind: "PersistentVolumeClaim"
   metadata:
   name: "mailserver-data-pvc"
   namespace: "mailserver"
   labels:
   app: mailserver
   spec:
   accessModes:
   - ReadWriteOnce
   resources:
   requests:
   storage: 15Gi
   ---
   kind: Service
   apiVersion: v1
   metadata:
   name: mailserver
   namespace: mailserver
   labels:
   app: mailserver
   annotations:
   metallb.universe.tf/address-pool: bgp-range
   spec:
   selector:
   app: mailserver
   ports:
   - name: smtp
   port: 25
   targetPort: smtp
   - name: smtp-auth
   port: 587
   targetPort: smtp-auth
   - name: imap-secure
   port: 993
   targetPort: imap-secure
   type: LoadBalancer
   externalTrafficPolicy: Local
   loadBalancerIP: 192.168.4.2
   ---
   kind: ConfigMap
   apiVersion: v1
   metadata:
   name: mailserver.config
   namespace: mailserver
   labels:
   app: mailserver
   data:
   postfix-receive-access.cf: |
   blacklisted@recipient.example REJECT
   
   postfix-send-access.cf: |
   blacklisted-sender REJECT
   
   postfix-accounts.cf: |
   user1@example.com|{SHA512-CRYPT}$6$2YpW1nYtPBs2yLYS$z.5PGH1OEzsHHNhl3gJrc3D.YMZkvKw/vp.r5WIiwya6z7P/CQ9GDEJDr2G2V0cAfjDFeAQPUoopsuWPXLk3u1
   
   postfix-virtual.cf: |
   @example.org user1@example.com
   
   SigningTable: |
   *@example.org my._domainkey.example.org
   *@example.com my._domainkey.example.com
   
   KeyTable: |
   my._domainkey.example.org example.org:my:/etc/opendkim/keys/example.org-mail.key
   my._domainkey.example.com example.com:my:/etc/opendkim/keys/example.com-mail.key
   
   TrustedHosts: |
   127.0.0.1
   localhost
   
   spamassassin-rules.cf: |
   header SPAMMER_1 From =~ / a-z » +d{2,4}.com/i
   score SPAMMER_1 5.0
   
   sa-cron: |
   # This assumes you're having `environment: ONE_DIR=1` in the docker-compose.yml,
   # with a consolidated config in `/var/mail-state`
   #
   # m h dom mon dow user command
   #
   # Everyday 2:00AM, learn spam from a specific user
   # spam: junk directory
   0 2 * * * root sa-learn --spam /var/mail/*/*/.Junk --dbpath /var/mail-state/lib-amavis/.spamassassin
   # ham: archive directories
   15 2 * * * root sa-learn --ham /var/mail/*/*/.Archive* --dbpath /var/mail-state/lib-amavis/.spamassassin
   # ham: inbox subdirectories
   30 2 * * * root sa-learn --ham /var/mail/*/*/cur* --dbpath /var/mail-state/lib-amavis/.spamassassin
   
   ---
   kind: Secret
   apiVersion: v1
   metadata:
   name: mailserver.opendkim.keys
   namespace: mailserver
   labels:
   app: mailserver
   type: Opaque
   data:
   example.org-mail.key: "key here"
   example.com-mail.key: "key here"
   ---
   kind: Deployment
   apiVersion: apps/v1
   metadata:
   name: mailserver
   namespace: mailserver
   labels:
   app: mailserver
   spec:
   selector:
   matchLabels:
   app: mailserver
   strategy:
   type: Recreate
   template:
   metadata:
   labels:
   app: mailserver
   spec:
   nodeSelector:
   has/mail-server: "true"
   subdomain: mailserver
   containers:
   - name: mailserver
   image: radicand/docker-mailserver:gha
   # image: radicand/docker-mailserver:b9f43ab
   resources:
   requests:
   memory: "500Mi"
   cpu: "750m"
   limits:
   memory: "1500Mi"
   cpu: "900m"
   imagePullPolicy: Always
   securityContext: {}
   ports:
   - name: smtp
   containerPort: 25
   - name: smtp-auth
   containerPort: 587
   - name: imap-secure
   containerPort: 993
   env:
   - name: DOMAINNAME
   value: "example.com"
   - name: ONE_DIR
   value: "1"
   - name: SMTP_ONLY
   value: "0"
   - name: ENABLE_SRS
   value: "0"
   - name: ENABLE_SPAMASSASSIN
   value: "1"
   - name: SA_SPAM_SUBJECT
   value: " SPAM » "
   - name: ENABLE_FAIL2BAN
   value: "0"
   - name: ENABLE_POSTGREY
   value: "0"
   - name: ENABLE_CLAMAV
   value: "0"
   - name: ENABLE_SASLAUTHD
   value: "0"
   - name: SRS_EXCLUDE_DOMAINS
   value: example.com
   - name: POSTMASTER_ADDRESS
   value: "postmaster@example.com"
   - name: POSTFIX_MESSAGE_SIZE_LIMIT
   value: "25000000"
   - name: SSL_TYPE
   value: "manual"
   - name: SSL_CERT_PATH
   value: "/etc/ssl/mailserver/tls.crt"
   - name: SSL_KEY_PATH
   value: "/etc/ssl/mailserver/tls.key"
   - name: OVERRIDE_HOSTNAME
   value: "mail.example.com"
   - name: REPORT_RECIPIENT
   value: "postmaster@example.com"
   volumeMounts:
   - name: config
   subPath: postfix-accounts.cf
   mountPath: /tmp/docker-mailserver/postfix-accounts.cf
   readOnly: true
   - name: config
   subPath: postfix-main.cf
   mountPath: /tmp/docker-mailserver/postfix-main.cf
   readOnly: true
   - name: config
   subPath: postfix-receive-access.cf
   mountPath: /tmp/docker-mailserver/postfix-receive-access.cf
   readOnly: true
   - name: config
   subPath: postfix-virtual.cf
   mountPath: /tmp/docker-mailserver/postfix-virtual.cf
   readOnly: true
   - name: config
   subPath: postfix-send-access.cf
   mountPath: /tmp/docker-mailserver/postfix-send-access.cf
   readOnly: true
   - name: config
   subPath: spamassassin-rules.cf
   mountPath: /tmp/docker-mailserver/spamassassin-rules.cf
   readOnly: true
   - name: config
   subPath: sa-cron
   mountPath: /etc/cron.d/sa-learn
   readOnly: true
   # mode: 0644
   - name: config
   subPath: SigningTable
   mountPath: /tmp/docker-mailserver/opendkim/SigningTable
   readOnly: true
   - name: config
   subPath: KeyTable
   mountPath: /tmp/docker-mailserver/opendkim/KeyTable
   readOnly: true
   - name: config
   subPath: TrustedHosts
   mountPath: /tmp/docker-mailserver/opendkim/TrustedHosts
   readOnly: true
   - name: opendkim-keys
   mountPath: /tmp/docker-mailserver/opendkim/keys
   readOnly: true
   - name: state
   mountPath: /var/mail-state
   - name: data
   mountPath: /var/mail
   - name: tls
   mountPath: /etc/ssl/mailserver
   readOnly: true
   volumes:
   - name: config
   configMap:
   name: mailserver.config
   # items:
   # - key: sa-cron
   # path: /etc/cron.d
   # mode: 0644
   - name: opendkim-keys
   secret:
   secretName: mailserver.opendkim.keys
   - name: state
   persistentVolumeClaim:
   claimName: "mailserver-pvc"
   - name: data
   persistentVolumeClaim:
   claimName: "mailserver-data-pvc"
   - name: tls
   secret:
   secretName: mail-example-com-tls

   2022-09-28 Tags: docker, k3s, deployment, example, radicand, github, production engineering by klotz

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