[Techtalk] Setting up Sendmail for relaying to ISP

[Gina Lanik]

On Wed, Dec 11, 2002 at 10:40:33AM +0100, Magni Onsoien wrote:
> On Mon, Dec 09, 2002 at 12:00:19PM -0500, Jennifer Davis said:
> > My ISP, Bell Sympatico, decided a while back to block port 25 to all
> > servers except their own.  This is not a big deal, except now I have
> > volunteered to host a mailing list and I assume that I need to configure
> > it so that the outbound traffic goes through their servers.
> > 
> > I had it set up before I upgraded my OS to Slack 8.1, so I know its
> > doable, I just foret how.  My internet searches have proved that I am
> > clueless when it comes to this.  Are there any tutorials in plain English
> > (or French) that can help me with this?
> 
> This is called using a smart host, so you have to tell sendmail to do that.
> Look for a line starting with DS, probably with a comment about smart
> relay server or something like that (that's what it's called in a RedHat
> sendmail.cf)
> 
> DSmailrelay.server.com
> 
> (i.e. DS<servername>)
> 
> Restart sendmail and it should work.

And if you use the sendmail.mc file to generate sendmail.cf...

sendmail.mc entry:
define(`SMART_HOST', `isp.smtp.here')dnl

which then results in

DSisp.smtp.here

in the sendmail.cf file just as Magni pointed out.

Cheers,

Gina
-- 
LISP: To call a spade a thpade.
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