Fix $mime_part_count for non-mime message on multi-message connection. Bug 2537

[exim.git] / test / rejectlog / 4208

******** SERVER ********
1999-03-02 09:44:33 H=localhost (the.local.host.name) [127.0.0.1] F=<> rejected RCPT <the.local.host.name-dddddddd-testing@test.ex>: relay not permitted