diff --git a/snippets/certificate-test.yml b/snippets/certificate-test.yml
deleted file mode 100644
index 5089a38..0000000
--- a/snippets/certificate-test.yml
+++ /dev/null
@@ -1,24 +0,0 @@
-apiVersion: cert-manager.io/v1
-kind: Certificate
-metadata:
-  name: mx-hottis-de
-spec:
-  secretName: mx-hottis-de-cert
-  duration: 2160h
-  renewBefore: 360h
-  subject:
-    organizations:
-      - hottis-de
-  isCA: false
-  privateKey:
-    algorithm: RSA
-    encoding: PKCS1
-    size: 2048
-  usages:
-    - server auth
-  dnsNames:
-    - mx.hottis.de
-  issuerRef:
-    name: letsencrypt-staging-http
-    kind: ClusterIssuer
-    group: cert-manager.io
diff --git a/snippets/exim4.conf b/snippets/exim4.conf
deleted file mode 100644
index 9be1c9d..0000000
--- a/snippets/exim4.conf
+++ /dev/null
@@ -1,74 +0,0 @@
-domainlist forward_domains = lsearch;/etc/exim4/forward_domains
-
-tls_advertise_hosts = *
-
-
-acl_smtp_connect = acl_connect
-acl_smtp_helo = acl_helo
-acl_smtp_rcpt = acl_rcpt
-acl_smtp_data = acl_data
-
-begin acl
-
-acl_connect:
-  deny message = Reverse DNS required
-       !verify = reverse_host_lookup
-  accept
-
-acl_helo:
-  deny message = Invalid HELO/EHLO name
-       condition = ${if match{$sender_helo_name}{\N^(localhost|localhost\.localdomain|\[?[0-9]{1,3}(\.[0-9]{1,3}){3}\]?)$\N}{yes}{no}}
-   accept
-
-acl_rcpt:
-  require verify = recipient
-
-  # SPF check
-  deny  message = Access denied (1)
-        spf = fail
-
-  # Greylisting
-  defer message = Try again later
-        !seen = 72h / key=${sender_address}_${local_part}@${domain}
-
-  # Rate limit
-  deny  message = Access denied (2)
-        ratelimit = 10 / 10m / strict
-
-  accept condition = ${if match_domain{$domain}{+forward_domains}{yes}{no}}
-
-  deny  message = Access denied (x)
-
-acl_data:
-  warn  dkim_status = invalid
-        add_header = X-DKIM-Status: invalid
-  warn  dkim_status = pass
-        add_header = X-DKIM-Status: pass
-
-  accept
-
-
-begin routers
-
-forward_aliases:
-  driver  = redirect
-  domains = +forward_domains
-  data    = ${lookup{$local_part@$domain}lsearch{/etc/exim4/forward_addresses}}
-  no_expn
-  allow_defer
-  allow_fail
-
-dnslookup_out:
-  driver    = dnslookup
-  domains   = ! +forward_domains
-  transport = remote_smtp
-  no_more
-
-
-begin transports
-
-remote_smtp:
-  driver = smtp
-  hosts_require_tls = *
-
-
diff --git a/snippets/forward_addresses b/snippets/forward_addresses
deleted file mode 100644
index 280710d..0000000
--- a/snippets/forward_addresses
+++ /dev/null
@@ -1 +0,0 @@
-wn@mainscnt.eu: wolfgang.hottgenroth@icloud.com
diff --git a/snippets/forward_domains b/snippets/forward_domains
deleted file mode 100644
index 326640a..0000000
--- a/snippets/forward_domains
+++ /dev/null
@@ -1,2 +0,0 @@
-mainscnt.eu
-