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.
Normally, relaying is controlled by the access file and should only permit your interal IP addresses. Also, does your virtuser table have default denies for unknown users or does it forward somewhere?