[CentOS] TCPWrappers + Sendmail = not working

>  $ ldd /usr/sbin/sendmail.sendmail | grep wrap
>         libwrap.so.0 => /usr/lib/libwrap.so.0 (0x00319000)
>
>  tcp_wrappers never sees the connection directly. sendmail handles it
>  from start to end.

Thanks for this info.  I will set up an iptables rule to block this access.