I don't see that your config actually uses CHECK_RCPT_REMOTE_LOCALPARTS, having defined it.
Perhaps the Debian documentation might have notes on its use? -- Cheers, Jeremy -- ## List details at https://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/