Author: Renaud Allard Date: To: Aleksandr V. Galiyev CC: exim-users Subject: Re: [exim] Exim does NOT run DNSBL and Spam checks if mail is
received from secondary mail server
Hello,
If your secondary MX is trusted (like in relay_from_hosts) by your
primary server, there is no reason the primary would run any checks on
mails sent by the secondary. And DNSBL cannot work, as mails are sent by
your secondary.
If you wish to have 2 MX, they should have the same level of pretection
against spam to be effective.
Aleksandr V. Galiyev wrote: > Hello,
>
> Everything was running just fine, until I added second PRI=20 MX for
> one of my domains - pointing to my secondary mail server.
>
> Secondary mail server is running on Windows and used only for MX
> backup purposes. Simple saying - just receiving mail and sending it
> to my primary mail server. (Argosoft Mailbag).
>
> After running with the above configuration for about 24 hours - I
> got tons of SPAM and every single spam message was received by my
> secondary mail server.
>
