diff --git a/install_update_dovecot-2.4.sh b/install_update_dovecot-2.4.sh
index 24482d3..d727b9f 100755
--- a/install_update_dovecot-2.4.sh
+++ b/install_update_dovecot-2.4.sh
@@ -7776,6 +7776,32 @@ EOF
 
    fi
 
+   _replace_key="sieve_max_redirects"
+   _replace_val=25
+
+   read -r -d '' COMMENT_BLOCK <<EOF
+# sieve_max_redirects
+#
+# The maximum number of redirect actions that can be performed during a single script execution.
+#
+#  Defaults to: 4
+
+EOF
+
+
+   if grep -qE "^\s*${_replace_key}\s*=" "${_conf_file}"; then
+
+      replace_variable "${_replace_key}" "${_replace_val}" "${_conf_file}" 2>> "${log_file}" || _failed=true
+
+   else
+
+      cat <<EOF >> "${_conf_file}" 2>> "${log_file}" || _failed=true
+
+${COMMENT_BLOCK}
+${_replace_key} = ${_replace_val}
+EOF
+   fi
+
 
 else