Date: Wed, 23 Jun 1999 13:26:01 -0500 From: "Alejandro Ramírez" <ales@megared.net.mx> To: "Doug White" <dwhite@resnet.uoregon.edu> Cc: <freebsd-questions@FreeBSD.ORG> Subject: RE: Problem with NAT!!! Message-ID: <004101bebda5$d8eb37e0$fba3f9cf@megared.net.mx> References: <Pine.BSF.4.10.9906221240020.99084-100000@resnet.uoregon.edu> <003001bebcf7$a514cb60$fba3f9cf@megared.net.mx>
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Hi Doug,
This is the output that I get when I make the .cf file with the
FEATURE(nodns) enabled, here it says that this option it´s no longer
available, that I should use the /etc/service.switch file, but I dont have
this file, and the only file I have is the /etc/services file, the faq in
sendmail.org site also said that i have to disable the dns lookups in this
file, but Im a little confused here, How do I do it??? , and another
question, disabling dns lookups in the server, will this going to be a
security hole in my server???, and this server its still going to be an
"internet mail server"???
Output from:
#make generic-bsd4.4.cf
FEATURE(nodns) is no-op.
Use ServiceSwitchFile (/etc/service.switch) if your OS does not provide its
own instead.
Thanks in Advance!!!
Ales
----- Original Message -----
To: Doug White <dwhite@resnet.uoregon.edu>
Sent: Tuesday, June 22, 1999 4:39 PM
> Hi Doug,
>
> Hi again, the solution of using an Internal DNS, its very dificult for
> me, I have about 10,000 customers behind the NAT at my routers, so I will
> have to disable DNS Lookups in Sendmail, but I cant find how to do it, the
> only thing I found its this : FEATURE(nodns), in the .mc file, but this
> didnt worked, I still having the same problem, is this the right feature,
or
> its something I have missed in the sendmail.org Site.
>
> Ales
>
> ----- Original Message -----
> From: Doug White <dwhite@resnet.uoregon.edu>
> Sent: Tuesday, June 22, 1999 2:40 PM
> > On Tue, 22 Jun 1999, Alejandro Ramírez wrote:
> >
> > > I have set up forward and reverse mapping to the outside ip
address
> of
> > > the NAT (the public IP Address), and I also set up an MX record to the
> same
> > > address ( I read it in a firewall list ), I have checked this
> configurations
> > > with the nslookup command, and also with this page
> > > http://www.wiskit.com/cgi-bin/tracecon , and everything seems to be
> > > configured correctly, but I still have to wait like 25-30 seconds to
get
> an
> > > answer from sendmail, I dont know what else I have to do to make this
> work
> > > with DNS records and computers behind the NAT.
> >
> > Yes, but you must set up an *INTERNAL* DNS with INTERNAL addresses.
> >
> > > BTW How do I turn off DNS lookups in sendmail, I want this to be my
last
> > > option.
> >
> > Check www.sendmail.org.
> >
> > > > > After 25 seconds it returns this...
> > > > >
> > > > > 220-mail.megared.net.mx ESMTP Mail Server.
> > > > > 220-Ready on Fri, 18 Jun 1999 16:13:16 -0500 (CDT).
> > > > > 220 !!!Do Not Spam this Site or use it as a Relay Without Explicit
> > > > > Permission!!
> >
> > Doug White
> > Internet: dwhite@resnet.uoregon.edu | FreeBSD: The Power to Serve
> > http://gladstone.uoregon.edu/~dwhite | www.freebsd.org
>
>
>
>
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