On Wed, Apr 03, 2002 at 06:12:55AM +0200, Pieter De Wit wrote:
>
> Ok, so basicly, the moment send mail gets a connection and the to and from
> is passed, it check if that domain is alive and kicking :) Now, what will
> happen if the mail relay (me logged in) comes from a host that sendmail
> can't resolve ? Before I fixed it it said that IP name lookup failed....Will
> this still apply even if I have auth'ed ?
By default, you'll still be rejected. To the best of my knowledge (and I'm
by no means a sendmail expert), auth is not related in any way to the dns
checks for incoming and outgoing mail.
Sendmail relies *heavily* on a working dns. Many people complain that send-
mail is broken when their dns isn't resolving properly. Before you can really
get a functional sendmail environment, you need a functional dns.
.../Ed
> ----- Original Message -----
> From: "Ed Wilts" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Tuesday, April 02, 2002 10:43 PM
> Subject: Re: Sendmail not auth'ing ?
>
>
> > On Tue, Apr 02, 2002 at 10:35:32PM +0200, Pieter De Wit wrote:
> > > Hello Ed,
> > >
> > > But surely they need to auth. first ? This is why I had the problem, my
> > > auth. wasn't trusted.
> >
> > Users don't need to authenticate - for example, my local hosts don't (I
> suppose
> > I should set it up, but haven't gotten around to that). The purpose of
> > rejecting unresolvable domains is for incoming mail - ie, if I send you
> smtp
> > mail from [EMAIL PROTECTED], do you want to accept it? With the
> test
> > available, you'll immediately reject it, no matter who the recipient is.
> >
> > You can't force *all* your mail to be authenticated. How would I sent
> mail
> > to you?
> >
> > .../Ed
> >
> > > Cheers,
> > >
> > > Pieter De Wit
> > >
> > > ----- Original Message -----
> > > From: "Ed Wilts" <[EMAIL PROTECTED]>
> > > To: <[EMAIL PROTECTED]>
> > > Sent: Tuesday, April 02, 2002 4:42 PM
> > > Subject: Re: Sendmail not auth'ing ?
> > >
> > >
> > > > On Tue, Apr 02, 2002 at 02:58:08AM -0600, System Services wrote:
> > > > > Do you have the followingin your sendmail.mc file:
> > > > >
> > > > > FEATURE(`accept_unresolvable_domains')dnl
> > > >
> > > > This is *bad* and will encourage the acceptance of spam. Many
> spammers
> > > use
> > > > unresolvable domains.
> > > >
> > > >
> > >
> http://www.sendmail.com/idemo/prod_guide/switch/switchdemo/helplets/en/accep
> > > t_unresolvable_domains.html
> > > >
> > > > --
> > > > Ed Wilts, Mounds View, MN, USA
> > > > mailto:[EMAIL PROTECTED]
> > --
> > Ed Wilts, Mounds View, MN, USA
> > mailto:[EMAIL PROTECTED]
--
Ed Wilts, Mounds View, MN, USA
mailto:[EMAIL PROTECTED]
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