Slightly OT: Greylisting another take
Alexander Volovics
awol at home.nl
Fri Feb 18 16:36:48 UTC 2005
On Fri, Feb 18, 2005 at 04:15:00PM +0000, Paul Howarth wrote:
> Alexander Volovics wrote:
> >>No, you're not. At least you're sending mail to this mailing list
> >>directly from your own machine (cm10703-a.maast1.lb.home.nl
> >>[84.30.68.3]) to Red Hat's MX hosts, not via any smarthost:
> >>Received: from cm10703-a.maast1.lb.home.nl (cm10703-a.maast1.lb.home.nl
> >> [84.30.68.3])
> >> by mx1.redhat.com (8.12.11/8.12.11) with ESMTP id j1IFgvvu021330
> >> for <fedora-list at redhat.com>; Fri, 18 Feb 2005 10:42:57 -0500
> >>Received: by af.ever.maas (Postfix, from userid 500)
> >> id C7446140FEB; Fri, 18 Feb 2005 16:46:37 +0100 (CET)
> >Yes, I am!
> >This is probably due to my postfix main.cf setup which contains
> >the line: "smtp_helo_name = cm10703-a.maast1.lb.home.nl"
> >I did this to keep all traces of my home network out of the headers.
> >Maybe I should rethink this.
> The top Received: line above shows mx1.redhat.com receiving a connection
> from 84.30.68.3; is that your IP or your ISP's smarthost's IP? My
> money's on the former.
84.30.68.3 is certainly my IP, let us check:
$ host cm10703-a.maast1.lb.home.nl
cm10703-a.maast1.lb.home.nl has address 84.30.68.3
However I am also definitely relaying my mail through my ISPs
mailserver 'mail.home.nl'. I use postfix for this.
This is configured in postfix's mail.cf file via:
'relayhost = [mail.home.nl]'
And if the email address is wrong (or something like that) I always
get an 'undeliverable' message from the @home server.
Another check:
$ host mail.home.nl
mail.home.nl has address 213.51.128.65
And I also see this in the headers.
Alexander
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