On Fri, June 4, 2010 11:10 am, Jerry Geis wrote: > I have centos 4.8 i686. It has stock sendmail. see file below. > > I am getting reports that it is an open relay. I have searched all around > and it seems like it should be closed. I have dnl for > accept_unresolvable_domains. > > What can I do to close my sendmail. Thanks, > > Jerry > > My sendmail.mc is as follows: <snip> What is content of /etc/mail/access ? Marko