diff --git a/smtprelay/Dockerfile b/smtprelay/Dockerfile
index 3cbeb4c..36a86ba 100644
--- a/smtprelay/Dockerfile
+++ b/smtprelay/Dockerfile
@@ -1,4 +1,5 @@
 FROM alpine:edge
-RUN apk --update --no-cache add opensmtpd && \
-    install -d -m 0711 -v /var/spool/smtpd
+RUN apk --update --no-cache add opensmtpd openssl && \
+    install -d -m 0711 -v /var/spool/smtpd && \
+    openssl req -newkey rsa:4096 -nodes -keyout /etc/ssl/serverkey.pem -x509 -days 365 -subj "/CN=smtprelay.codehal.de" -out /etc/ssl/servercert.pem
 ENTRYPOINT smtpd -d
diff --git a/smtprelay/smtpd/cert.pem b/smtprelay/smtpd/cert.pem
deleted file mode 100644
index 01ee787..0000000
--- a/smtprelay/smtpd/cert.pem
+++ /dev/null
@@ -1,33 +0,0 @@
------BEGIN CERTIFICATE-----
-MIIFszCCA5ugAwIBAgIUYh+iI3IuwVOOeFMAKvcKQPyqjvMwDQYJKoZIhvcNAQEL
-BQAwaTELMAkGA1UEBhMCREUxFDASBgNVBAgMC0JyYW5kZW5idXJnMREwDwYDVQQH
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-X8k+l8BcgdVRynGtrlpPrTf25uRtCrg8G+wgP/aVi+UzjnjZq3HLgSfONfXQrc+S
-M+OIVopsxtbUNrvl7F1GuZdFBBAC45MkIdg1gJEyypgoNZewo/fdfnQrDAXVnf2M
-krRNwR/uen8hKHAlvqkIHkLtqa3zj8bGlINPQk/Lz5dJUEb0Gu0igqHLSvcHf8ZK
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-s59sUAWupASpxRNxB6MdgJAnAe6uz1k=
------END CERTIFICATE-----
diff --git a/smtprelay/smtpd/key.pem b/smtprelay/smtpd/key.pem
deleted file mode 100644
index 025030d..0000000
--- a/smtprelay/smtpd/key.pem
+++ /dev/null
@@ -1,52 +0,0 @@
------BEGIN PRIVATE KEY-----
-MIIJQwIBADANBgkqhkiG9w0BAQEFAASCCS0wggkpAgEAAoICAQC6L7nh35knHsxI
-yewws66bQrym+zb7RAA+NlyySjO68lUhLdboZdYPxwTy6FXxr4N876CI0NOsieNM
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-GtCx++8MfVID9DG8fyVzwVblPE5GE81YjvZgJ4zoiguHziL4Y/XPyyai9OeM/8sz
-WPwhAoIBAGF+OCWbAQJMIp5XJH/4rdwsPlpqdsVJ8ZjuX36iTFg5em23QtiWd8nV
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-bXrg+CeLXkHyZ28y2ulOO2pMvSQso08=
------END PRIVATE KEY-----
diff --git a/smtprelay/smtpd/smtpd.conf b/smtprelay/smtpd/smtpd.conf
index 8530a55..4c02cc6 100644
--- a/smtprelay/smtpd/smtpd.conf
+++ b/smtprelay/smtpd/smtpd.conf
@@ -1,5 +1,5 @@
-pki "server" cert "/etc/smtpd/cert.pem"
-pki "server" key  "/etc/smtpd/key.pem"
+pki "server" cert "/etc/ssl/servercert.pem"
+pki "server" key  "/etc/ssl/serverkey.pem"
 
 table creds file:/etc/smtpd/creds