At 09:20 AM 8/12/2000 -0700, you wrote:
>At 03:38 AM 8/1/00 EDT, you wrote:
> >YOu NEED A MX record for outside mail or have a host file with every IP's
>and domain in the internet.
>
>Having a host file with all ip's is only marginally good ... only
>machines with mx records are known smtp transports.
>
>What I've chosen to do here is make use of specific channel routing
>by using the mailertable feature but I can't remember if it's
>even available in an older version of sendmail like Max is running.
>
>My /etc/mail/mailertable looks like this ...
>
>n7xss.heber.ampr.org smtp:[44.124.34.66]
>heber.ampr.org smtp:[44.124.34.36]
>lksd.ampr.org smtp:[44.124.32.4]
>
>... these are the only smtp gateways within radiopath of
>my home qth (n7xss91). The square brackets mean "don't use MX records,
>specifically use this IP address".
>
>My linux box here is an internet gateway so all other destination
>addresses will do a DNS lookup for the MX record and follow a path
>via the internet interface ... if there *is* another node within my
>route to ax0 (the packet radio interface of course) and his DNS MX
>record is a 44.124.x.x number and *not* in my mailertable sendmail
>will try to use that address to deliver ... but success will depend
>entirely on the radio path.
>
>Bottom line is that I put the machines that I know are running a
>smtp port and I know I have a good radio path to get there, in my
>mailertable and bypass DNX MX records.
>
>--
>-= Brad Fisher =- I'm just
>internet: [EMAIL PROTECTED] a
> packet: [EMAIL PROTECTED] wanna be
> UNIX guru!
Sendmail has supported mailertables since near the beggining of time.
But ANYONE who is connected to the net with anything larger than a shoe
string should be sure to run the latest versions of sendmail. (8.11.x
currently) due to the number of known security risks in older versions.
Relay control should certainly be implemented in the configuration to avoid
the system from being abused by the spammers. Besides, the newer versions
are faster and more stable, offer more options, easier to install and
configure too.
------------------------------------------------------------------------
Rich Hall - http://www.netlynx.com/rich
emailto:[EMAIL PROTECTED]
amateur radio: KF6ARX
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