On Monday 28 July 2003 14:22, pnelson wrote: > On Mon, 2003-07-28 at 11:26, Cowles, Steve wrote: > > use sendmail's mailertable feature. i.e. > > > > # cd /etc/mail > > # cat mailertable > > mydomain.com esmtp:[ip or fqdn of internal mail server] > > > > # make > > > > Obviously, you need to substitute mydomain.com with your domain > > name. The left and right brackets following the : ARE NEEDED to > > stop MX lookups. > > be careful of this setup. You can turn on an open relay if your not > configured correctly. > > Originator -> SMTP1 -> relay -> SMTP2 > > What can happen is that because SMTP accepts relays from smtp1 it > will put inbound mail to the proper mailboxes, but will send outbound > mail also. You may not notice it right away, but then you will start > getting returned mail that isn't from you. > > I'm not sure how to stop this, I just turned it off. Now, I'm > setting up Authentication as we speak to see if that will work for > me. > > If anyone knows how to do the relay while not creating a open relay, > please advise.
Assuming that SMTP1 is a different box than SMTP2 in your note above, and assuming that you really meant to type "What can happen is that because SMTP2" in your explanation, please explain how configuring SMTP1 as Steve noted can turn SMTP2 into an open relay. If I don't understand your note correctly please set me straight. Regards, Mike Klinke -- redhat-list mailing list unsubscribe mailto:[EMAIL PROTECTED] https://www.redhat.com/mailman/listinfo/redhat-list
