Just for the record, Victor's finding falsifies the claim that the
problem, once triggered, persists across postfix stop/start.
I suggest moving the fix into the teardown_milters() function. It's
still not perfect, but it keeps things in one place.
Wietse
*** ./src/smtpd/smtpd.c- 2017-02-18 20:58:21.000000000 -0500
--- ./src/smtpd/smtpd.c 2017-04-03 14:03:29.000000000 -0400
***************
*** 5396,5401 ****
--- 5396,5403 ----
milter_free(state->milters);
state->milters = 0;
}
+ smtpd_input_transp_mask =
+ input_transp_mask(VAR_INPUT_TRANSP, var_input_transp);
}