diff --git a/charts/dbildungs-iam-ldap/custom_schema_ldifs/ucs_mail.ldif b/charts/dbildungs-iam-ldap/custom_schema_ldifs/ucs_mail.ldif
deleted file mode 100644
index 81071fa..0000000
--- a/charts/dbildungs-iam-ldap/custom_schema_ldifs/ucs_mail.ldif
+++ /dev/null
@@ -1,18 +0,0 @@
-dn: cn=ucsMail,cn=schema,cn=config
-objectClass: olcSchemaConfig
-cn: ucsMail
-olcAttributeTypes: ( 1.3.6.1.4.1.10176.1010.1.41 NAME 'univentionCanonicalSenderRewriteEnabled'
- DESC 'rewrite sender addresses?' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{10} SINGLE-VALUE )
-olcAttributeTypes: ( 1.3.6.1.4.1.10176.1010.1.42 NAME 'univentionCanonicalRecipientRewriteEnabled'
- DESC 'rewrite recipient addresses?' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{10} SINGLE-VALUE )
-olcAttributeTypes: ( 1.3.6.1.4.1.10176.1010.1.43 NAME 'univentionInternalPrimaryMailAddress' 
- DESC 'primary mail address of user' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{256} SINGLE-VALUE )
-olcAttributeTypes: ( 1.3.6.1.4.1.10176.1010.1.44 NAME 'univentionInternalAlternativeMailAddress' 
- DESC 'additional mail addresses' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{256}
-  )
-olcAttributeTypes: ( 1.3.6.1.4.1.10176.1010.1.45 NAME 'univentionPublicPrimaryMailAddress' DESC 'public mail address of user' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{256} SINGLE-VALUE )
-olcAttributeTypes: ( 1.3.6.1.4.1.10176.1010.1.46 NAME 'univentionPublicAlternativeMailAddress' DESC 'additional mail addresses' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{256} )
-olcObjectClasses: ( 1.3.6.1.4.1.10176.1010.2.40 NAME 'univentionMailCanonicalMaps' 
- DESC 'data for rewriting mail addresses'
- SUP top 
- AUXILIARY MAY ( univentionCanonicalSenderRewriteEnabled $ univentionCanonicalRecipientRewriteEnabled $ univentionInternalPrimaryMailAddress $ univentionInternalAlternativeMailAddress $ univentionPublicPrimaryMailAddress $ univentionPublicAlternativeMailAddress ) )
diff --git a/charts/dbildungs-iam-ldap/values.yaml b/charts/dbildungs-iam-ldap/values.yaml
index c59ed6b..82e41e8 100644
--- a/charts/dbildungs-iam-ldap/values.yaml
+++ b/charts/dbildungs-iam-ldap/values.yaml
@@ -97,7 +97,25 @@ pdb:
 # after chart default schemas, allowing you to control the loading sequence.
 customSchemaFiles:
   ucs_mail.ldif: |-
-    {{ .Files.Get "custom_schema_ldifs/ucs_mail.ldif" }}
+    dn: cn=ucsMail,cn=schema,cn=config
+    objectClass: olcSchemaConfig
+    cn: ucsMail
+    olcAttributeTypes: ( 1.3.6.1.4.1.10176.1010.1.41 NAME 'univentionCanonicalSenderRewriteEnabled'
+     DESC 'rewrite sender addresses?' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{10} SINGLE-VALUE )
+    olcAttributeTypes: ( 1.3.6.1.4.1.10176.1010.1.42 NAME 'univentionCanonicalRecipientRewriteEnabled'
+     DESC 'rewrite recipient addresses?' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{10} SINGLE-VALUE )
+    olcAttributeTypes: ( 1.3.6.1.4.1.10176.1010.1.43 NAME 'univentionInternalPrimaryMailAddress' 
+     DESC 'primary mail address of user' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{256} SINGLE-VALUE )
+    olcAttributeTypes: ( 1.3.6.1.4.1.10176.1010.1.44 NAME 'univentionInternalAlternativeMailAddress' 
+     DESC 'additional mail addresses' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{256}
+     )
+    olcAttributeTypes: ( 1.3.6.1.4.1.10176.1010.1.45 NAME 'univentionPublicPrimaryMailAddress' DESC 'public mail address of user' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{256} SINGLE-VALUE )
+    olcAttributeTypes: ( 1.3.6.1.4.1.10176.1010.1.46 NAME 'univentionPublicAlternativeMailAddress' DESC 'additional mail addresses' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{256} )
+    olcObjectClasses: ( 1.3.6.1.4.1.10176.1010.2.40 NAME 'univentionMailCanonicalMaps' 
+     DESC 'data for rewriting mail addresses'
+     SUP top 
+     AUXILIARY MAY ( univentionCanonicalSenderRewriteEnabled $ univentionCanonicalRecipientRewriteEnabled $ univentionInternalPrimaryMailAddress $ univentionInternalAlternativeMailAddress $ univentionPublicPrimaryMailAddress $ univentionPublicAlternativeMailAddress ) )
+