Re: [Exim] exim checking wrong received: line

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Author: Matt Bernstein
Date:  
To: Tony Finch
CC: michael.b, exim-users
Subject: Re: [Exim] exim checking wrong received: line
At 10:33 +0100 Tony Finch wrote:

>Michael Bordignon <michael.b@???> wrote:
>>
>>The problem with this is that when it is finally delivered to the primary,
>>spam by-passes the RBL check (as the server the mail is coming from will be
>>our secondary). Are there any known ways around this?
>
>You have to implement the same security checks on all your MXes.


Yes, but since Exim 4.14 can do this:

  defer   message = you are listed in $dnslist_domain \n \
                    please use the primary MX for $domain
          domains = +relay_domains
          dnslists = rbl-plus.mail-abuse.ja.net : \
            dynablock.wirehub.net : relays.ordb.org : \
            relays.osirusoft.com : opm.blitzed.org : bl.spamcop.net
          hosts = +rbl_hosts
          log_message = $domain RBL ($dnslist_domain)


..and this is the sort of thing you can persuade your backup MX admins to
implement (hello Steve :)

Matt