http://bugs.gentoo.org/show_bug.cgi?id=288520
http://bugs.exim.org/show_bug.cgi?id=667
http://vcs.exim.org/viewvc/exim/exim-src/src/auths/dovecot.c?r1=1.8&r2=1.9

--- src/auths/dovecot.c   2008/01/18 12:23:26     1.8
+++ src/auths/dovecot.c   2008/02/06 12:44:59     1.9
@@ -369,6 +369,9 @@
	}
 
 out:
+	/* close the socket used by dovecot */
+	if (fd >= 0)
+		close(fd);
 
	/* Expand server_condition as an authorization check */
	return (ret == OK)? auth_check_serv_cond(ablock) : ret;