RE: [Exim] HELO & multiple domains

> -----Original Message-----
> From: Rick Cooper [mailto:rick@cooper-home.com]
> Sent: Sunday, November 23, 2003 12:38 PM
> To: David Harris; exim-users@???
> Subject: RE: [Exim] HELO & multiple domains
>
>
>
>
> > -----Original Message-----
> > From: exim-users-admin@??? [mailto:exim-users-admin@exim.org]On
> > Behalf Of David Harris
> > Sent: Sunday, November 23, 2003 11:54 AM
> > To: exim-users@???
> > Subject: [Exim] HELO & multiple domains
> >
> >
> > I run several domains from one box. For various reasons I
> > wont go into I can
> > only have 1 IP address so change of ISP is not feasible. For
> > the most part
> > exim seems to work fine almost out of the box. However,
> > whichever domain I
> > send mail from the helo
> > greeting responds with the primary_hostname & qualifying
> > domain: so if my
> > primary host name is 'foo'  and my qualify_domain is 
> > 'bar.com' and I send
> > from one of my other domains, e.g. wibble.com the helo data is 'helo
> > foo.bar.com' not 'foo.wibble.com' .
> >
> > The mail actually get sent OK. The problem however is
> > information leakage. All
> > this didnt use to be a problem since I used to use just the
> > host name with no
> > qualifying name: e.g. just 'foo' but now a few remote hosts
> > are declining me
> > and insisting on a fqdn, anti-spam I guess. Problem is that
> > the above issue
> > causes information leakage and a customers using one of my
> > professional
> > domains looked at my headers has commented on the content of
> > other domains as
> > being unprofessional.
> >
> > I need to solve this leakage. but I havent been able to
> > figure out how to get
> > it give the right helo dependant on each domain Im sending
> > from. I want to be
> > able to say something like;
> > 'remote_smtp:
> > driver = smtp
> > helo_data = ${sender_domain)
> > or
> > helo_data =
> > ${lookup{sender_domain}lsearch*{/etc/mail/domains/helo}{$value}}
> > '
> > but as an exim newbie I couldnt figure out the syntax either.
> > Anyone got any ideas? thanks
> >
> >
>
> A couple come to mind:
>
> If you have a standard ptr/A record setup for each domain
> such as "smtp.domain" then
>
> helo_data = smtp.$sender_address_domain
>
<snip>

I don't like the above. If you are forwarding for another domain and
mail arrived from someone@??? that would be a bad thing. With
the second example if the sender address domain is not listed in your
helo file then your primary host name is used.

Rick