the list can be used to restore a caseful copy of the local part from the
original address.
Limit the subject address size to avoid mem-exhastion attacks. The size chosen
-is historical (we used to use big_buffer her). */
+is historical (we used to use big_buffer here). */
if ((len = Ustrlen(address)) > BIG_BUFFER_SIZE) len = BIG_BUFFER_SIZE;
ab.address = string_copyn(address, len);