You can use sendmail but I'd prefer postfix. It does have headers and body
filtering using regexp. I've done many configs w/c checks emails with
attachment before they are relayed internally.
HINT:
amavis-perl
postfix
sophos
linux, freebsd or openbsd
and of course, perl
i guess, that's enough :-)
> -----Original Message-----
> From: Rick Lim [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, March 15, 2001 8:53 AM
> To: Ben Nagy; [EMAIL PROTECTED]
> Subject: RE: Newbie question re: mail hub
>
>
> how about sendmail on the firewall which just forwards
> to the internal mail hub?
>
> > -----Original Message-----
> > From: Ben Nagy [mailto:[EMAIL PROTECTED]]
> > Sent: Wednesday, March 14, 2001 2:22 PM
> > To: 'Rick Lim'; [EMAIL PROTECTED]
> > Subject: RE: Newbie question re: mail hub
> >
> >
> > It kind of depends.
> >
> > Security-wise, you want mail to be relayed through a 'hard'
> mail program
> > like procmail or qmail or something before it gets to any
> 'soft' mail
> > programs like Sendmail, Exchange or Groupwise (assuming it
> gets to any of
> > those at all).
> >
> > You could achieve this by running the 'hard' mailserver on the
> > firewall, but
> > you could also achieve this by running a bastion host in
> the DMZ that just
> > does mail-relay through qmail or whatever.
> >
> > What you _don't_ want is simple NAT port forwarding to your internal
> > mailserver.
> >
> > Cheers,
> >
> > --
> > Ben Nagy
> > Network Security Specialist
> > Marconi Services Australia Pty Ltd
> > Mb: +61 414 411 520 PGP Key ID: 0x1A86E304
> >
> > > -----Original Message-----
> > > From: Rick Lim [mailto:[EMAIL PROTECTED]]
> > > Sent: Thursday, 15 March 2001 1:27
> > > To: [EMAIL PROTECTED]
> > > Subject: Newbie question re: mail hub
> > >
> > >
> > > Hi there,
> > >
> > > Here's a newbie question........
> > > what is the best configuration, and why
> > >
> > > 1) mail hub on firewall machine
> > >
> > > 2) mail hub on internal machine with the mail port forwarded
> > > to the mail
> > > hub
> > >
> > > 3) other suggestions.
> > >
> > > TIA
>
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