--- a/pop3d.c	Thu Apr 10 17:59:07 2014 +0500
+++ b/pop3d.c	Thu Apr 10 18:26:13 2014 +0500
@@ -47,7 +47,6 @@
 static void usage(void);
 
 static struct imsgev	iev_pop3e;
-static pid_t		pop3e_pid;
 static const char	*mpath;
 static int		mtype = M_MBOX;
 
@@ -102,7 +101,7 @@
 	if ((pw = getpwnam(POP3D_USER)) == NULL)
 		fatalx("main: getpwnam " POP3D_USER);
 
-	pop3e_pid = pop3_main(pair, pw);
+	pop3_main(pair, pw);
 	close(pair[1]);
 	setproctitle("[priv]");
 	logit(LOG_INFO, "pop3d ready; type:%s, path:%s", mtype_str, mpath);
@@ -206,8 +205,9 @@
 		event_loopexit(NULL);
 		break;
 	case SIGCHLD:
-		if (waitpid(pop3e_pid, &status, WNOHANG) > 0)
-			if (WIFEXITED(status) || WIFSIGNALED(status)) {
+		if (waitpid(WAIT_ANY, &status, WNOHANG) > 0)
+			if ((WIFEXITED(status) && WEXITSTATUS(status) != 0) ||
+			    WIFSIGNALED(status)) {
 				logit(LOG_ERR, "Lost pop3 engine");
 				event_loopexit(NULL);
 			}

--- a/pop3d.h	Thu Apr 10 17:59:07 2014 +0500
+++ b/pop3d.h	Thu Apr 10 18:26:13 2014 +0500
@@ -144,7 +144,7 @@
 };
 
 /* pop3e.c */
-pid_t pop3_main(int [2], struct passwd *);
+void pop3_main(int [2], struct passwd *);
 
 /* session.c */
 void session_init(struct listener *, int);

--- a/pop3e.c	Thu Apr 10 17:59:07 2014 +0500
+++ b/pop3e.c	Thu Apr 10 18:26:13 2014 +0500
@@ -47,7 +47,7 @@
 struct imsgev		iev_pop3d;
 void			*ssl_ctx;
 
-pid_t
+void
 pop3_main(int pair[2], struct passwd *pw)
 {
 	extern struct session_tree	sessions;
@@ -59,7 +59,7 @@
 		fatal("pop3e: fork");
 
 	if (pid > 0)
-		return (pid);
+		return;
 
 	close(pair[0]);
 	setproctitle("pop3 engine");