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-rw-r--r--src/src/configure.default6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/src/configure.default b/src/src/configure.default
index 1dc9b913d..79bbc8c30 100644
--- a/src/src/configure.default
+++ b/src/src/configure.default
@@ -520,6 +520,12 @@ acl_check_data:
got $max_received_linelength
condition = ${if > {$max_received_linelength}{998}}
+ # Deny if the headers contain badly-formed addresses.
+ #
+ deny !verify = header_syntax
+ message = header syntax
+ log_message = header syntax ($acl_verify_message)
+
# Deny if the message contains a virus. Before enabling this check, you
# must install a virus scanner and set the av_scanner option above.
#