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@@ -412,6 +412,93 @@ Successful delivery to <danedomain@example.nl> (retry 0) in 2.108s: 2.0.0 exampl
 Deleting mail file (all recipients done)
 ```
 
+# Implementing DANE for SMTP on Port25 PowerMTA (outbound e-mail traffic)
+Various Email Service Providers (ESP) are using Port25 PowerMTA as their preferred outbound MTA.
+
+Port25 has build-in support for DANE since version v5.0
+
+**Specifics for this setup**
+* Port25 PowerMTA v5.x+
+
+**Assumptions**
+* Basic configuration of PowerMTA
+* TLS Certificate already in place
+* STARTTLS active (`use-starttls	yes`)
+* DNSSEC capable DNS resolver
+
+## Generic configuration
+### Configure the use of DANE on the domain level
+
+Within the configuration of a specific domain
+```
+  <domain example.com>
+    use-dane true
+  </domain>
+```
+
+  Within the configuration of all domains
+```
+    <domain *>
+      use-dane true
+    </domain>
+```
+
+If TLS is required per DANE for SMTP `use-starttls` and `require-starttls` will be overridden.
+
+### Logging
+
+By enabling the resolver logging (`log-resolution yes`) you are able to see the DNS queries for the TLSA records.
+
+Within the configuration of a specific domain
+```
+  <domain example.com>
+    log-resolution yes
+  </domain>
+```
+
+  Within the configuration of all domains
+```
+    <domain *>
+      log-resolution yes
+    </domain>
+```
+
+By enabling the TLS logging (`log-tls yes`) you are able to see the TLS DANE verification.
+
+Within the configuration of a specific domain
+```
+  <domain example.com>
+    log-tls yes
+  </domain>
+```
+
+  Within the configuration of all domains
+```
+    <domain *>
+      log-tls yes
+    </domain>
+```
+
+Example logging:
+
+DNS Resolver
+```
+Starting new query for TLSA _25._tcp.jail.internet.nl:
+answer _25._tcp.jail.internet.nl. 3600 IN CNAME 3.1.1._dane.internet.nl.
+answer _25._tcp.jail.internet.nl. 3600 IN CNAME 3.1.1._dane.internet.nl.
+answer 3.1.1._dane.internet.nl. 3600 IN TLSA 3 1 1 25DE2127E359B8522DDD6E237381458804549CDE5440E4F5B547C5629E48D46B
+_25._tcp.jail.internet.nl. 3600 IN CNAME 3.1.1._dane.internet.nl.
+_25._tcp.jail.internet.nl. 3600 IN CNAME 3.1.1._dane.internet.nl.
+3.1.1._dane.internet.nl. 3600 IN TLSA 3 1 1 25DE2127E359B8522DDD6E237381458804549CDE5440E4F5B547C5629E48D46B
+```
+TLS Logging
+```
+tls: TLSv1.2 connected with 256-bit ECDHE-RSA-AES256-GCM-SHA384
+tls: cert: /C=NL/ST=Zuid-Holland/L=Den Haag/XXXXXXX; issuer=/C=NL/O=XXXXXXX; verified=yes
+tls: DANE match: /C=NL/ST=Zuid-Holland/L=XXXXXX; issuer=XXXXX; depth=0
+```
+
+
 # Special thanks
 Our infinite gratitude goes out to the following people for their support in building this how-to for DANE.