[Dovecot] Dovecot + Cygwin

[Ronny]

> If that worked, try adding exit(0); as the first statement in
> src/auth/main.c's main() function to see if it returns 53 before or
> after it reaches that far.
> 

I put some information output to the code (i do not have a debbuger 
running yet ;-) )

static void auth_process_input(void *context)
{
...

         switch (i_stream_read(process->input)) {
...
         case -1:
                 /* disconnected */
i_info("DIE 2");
                 auth_process_destroy(process);
                 return;
         case -2:
                 /* buffer full */
...
i_info("DIE 3");
                 auth_process_destroy(process);
                 return;
         }

The log is,
  >>> dovecot: Nov 21 02:52:09 Info: DIE 2 <<<
dovecot: Nov 21 02:52:09 Error: Auth process died too early - shutting down
dovecot: Nov 21 02:52:09 Error: child 1300 (auth) returned error 53