On Mon, 6 Jun 2005, Raymond Norton wrote: > I can get to the microsoft news server just fine??? news.microsoft.com probably only carries MS groups, since it's a public server. 3com (used to?) do the same thing...news.3com.com is publicly accessible, but only carries 3com.* groups for customer support. > Anyway, what I need to accomplish is to force all outgoing smtp traffic to > hit my outbound relay server if it is not destined for either of my two > class C's. I have an inbound gateway server that scans mail for many You mean unless the mail is destined for particular domains? > school districts and then forwards it on to them, but the same box acts as > my local smtp and imap server, hence the little complication. I wanted to > try and accomplish this via IPtables, but did not get any responses to my > post. If I'm reading this right, on the inbound box you have some school district domains that you are scanning mail for, and need to forward their mail on to them directly. Anything else, you want to be sent to the outbound gateway? In that case (if I understand your problem correctly), set the inbound server to use the outbound one as a smarthost (look for "DS" at the beginning of a line in sendmail.cf, and make the line look like:) Find: DS Change to: DSoutbound.server.name And then config the school domains in mailertable with the correct routing info: edit /etc/mail/mailertable: school1.com smtp:smtp.server.for.school1.com school2.com smtp:smtp.server.for.school2.com Make sure your sendmail config has mailertable support: $ grep mailertable /etc/mail/sendmail.cf ... Kmailertable hash -o /etc/mail/mailertable ... And rebuild the mailertable hash: $ makemap hash /etc/mail/mailertable < /etc/mail/mailertable This should force all your outgoing mail from the internal box to be relayed through the outbound gateway, except for the domains that you put in mailertable will be relayed to the mailservers you specify for each domain.