diff --git a/data/conf/postfix/anonymize_headers.pcre b/data/conf/postfix/anonymize_headers.pcre
index 099094d9..d1ad005d 100644
--- a/data/conf/postfix/anonymize_headers.pcre
+++ b/data/conf/postfix/anonymize_headers.pcre
@@ -6,3 +6,5 @@ endif
 /^\s*X-Mailer/          IGNORE
 /^\s*X-Originating-IP/  IGNORE
 /^\s*X-Forward/         IGNORE
+# Not removing UA by default, might be signed
+#/^\s*User-Agent/        IGNORE