mp = xmalloc (2 + sizeof (DEFAULT_MAIL_DIRECTORY) + strlen (current_user.user_name));
strcpy (mp, DEFAULT_MAIL_DIRECTORY);
mp[sizeof(DEFAULT_MAIL_DIRECTORY) - 1] = '/';
mp = xmalloc (2 + sizeof (DEFAULT_MAIL_DIRECTORY) + strlen (current_user.user_name));
strcpy (mp, DEFAULT_MAIL_DIRECTORY);
mp[sizeof(DEFAULT_MAIL_DIRECTORY) - 1] = '/';