Date: Wed, 3 Apr 2002 15:30:28 -0500 (EST) From: Peter Leftwich <Hostmaster@Video2Video.Com> To: FreeBSD Questions <FreeBSD-Questions@FreeBSD.Org> Subject: Fwd: Re: Sendmail question - block users from sending email to internet Message-ID: <20020403152947.M57287-100000@earl-grey.cloud9.net>
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Message-ID: <003501c1db57$776ec3b0$5a01a8c0@fusion.ie>
From: "Bryan Crowley" <crowleybryan@eircom.net>
To: "Peter Leftwich" <Hostmaster@Video2Video.Com>
References: <20020329180902.I75496-100000@earl-grey.cloud9.net>
Subject: Re: Sendmail question - block users from sending email to internet
Date: Wed, 3 Apr 2002 22:35:23 +0100
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Hi Peter
Thanks for the mail but I am still at a loss here is a bit more detail maybe
you be as good to offer a perl of wisdom.
The senario is as follows:
The freeBSD box is set up to server students in a class room envoirment.
Have done extensive work on the setup but this mail is the only thing that
has stumped me. My users log on to the box via ssh through a windows
machine. Once they have gained access I want them to use the mail agent
"mail" to mail other account holders and the lecturer which is working fine
from the default installation. The mail lookup as far as other users on the
box is perfect .ie mail root... But when they try and mail a domain i.e
jj@hotmail.com I want a error message to apear at the mail agent that that
access is denied. I tried the solution you offered but that kind of mail
just goes into the queu as
fusiond# sendmail -bp
/var/spool/mqueue (5 requests)
----Q-ID---- --Size-- -----Q-Time----- ------------Sender/Recipient---------
---
g32LFI800151 0 Tue Apr 2 22:15 root
(host map: lookup (hotmial.com): deferred)
jj@hotmial.com
I also tried the access file in /etc/mail and ran the make command as
specified in the FreeBSD handbook, and that had no effect.
The main issue is when I look at any documentation for sendmail it goes into
great dept of configuring the mail for various areas but none mention how to
actually stop mail. In the freeBSD handbook it says "In default FreeBSD
installations, Sendmail is configured to only send mail from the host it is
running on" how do I configure it to send mail to account holders but once a
mail is sent to another domain it will give an error message.
Thanks again for you replay
Best Regards
Bryan Crowely
----- Original Message -----
From: "Peter Leftwich" <Hostmaster@Video2Video.Com>
To: "Bryan Crowley" <crowleybryan@eircom.net>
Cc: "FreeBSD Questions" <freebsd-questions@FreeBSD.ORG>
Sent: Saturday, March 30, 2002 12:11 AM
Subject: Re: Sendmail question - block users from sending email to internet
> On Sat, 30 Mar 2002, Bryan Crowley wrote:
> > Hi - I would like block all/some users sending email to internet and
receive email from internet. I am setting up a Freebsd box for lectures to
faclate their sysablus but only want the users to be able to mail local
users on the box. I am using FreeBSD v1.5. Any help would be graciously
accepted.
> > Best Regards
> > Bryan
>
> Check out "man sendmail" especially and http://www.sendmail.org but for
now
> this should get you started:
>
> In /etc/mail/sendmail.cf you might see two lines like this:
> # Hosts for which relaying is permitted ($=R)
> FR-o /etc/mail/relay-domains
>
> mypromt$ cat /etc/mail/relay-domains
> # Mail relay access control list. Default is to reject mail unless the
> # destination is local, or listed in /etc/mail/local-host-names
> #cyberspammer.com 550 We don't accept mail from spammers
> #FREE.STEALTH.MAILER@ 550 We don't accept mail from spammers
> #another.source.of.spam REJECT
> #okay.cyberspammer.com OK
> #128.32 RELAY
> localhost RELAY
> 127.0.0.1 RELAY
>
> --
> Peter Leftwich
> President & Founder
> Video2Video Services
> Box 13692, La Jolla, CA, 92039 USA
> +1-413-403-9555
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