Re: [exim] Unique filtering question

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Auteur: Ian FREISLICH
Date:  
À: Eddie Shipman
CC: exim-users
Sujet: Re: [exim] Unique filtering question
Eddie Shipman wrote:
> I have a domain that is using Exim. We have been getting tons of
> spam directed to dictionary generated addresses but usually one
> or more of the addresses are valid domain addresses.


Do you know if these mails have multiple SMTP RCPTs or just multiple
addresses in the To:, Cc: and Bcc: headers?

> Is it possible to discard ANY message that has ANY address that
> is not a valid address in my domain?
>
> i.e.
> {Will be delivered}                       {Will be delivered}
> TO: web@???,scores@???          TO: web@???
> CC: austin@???                       CC: treasurer@???
> BCC: president@???

>
>
> {Will be discarded}                        {Will be discarded}
> TO: web@???, scores@???          TO: fred@???
> CC: austin@???, fred@???         CC: austin.ambl.com
> BCC: president@???                    BCC: jim@???

>
> There is no fred@??? or jim@??? accounts on my domain.
> I don't care if there are valid addresses in the list. If there
> are ANY invalid accounts for my domain in the TO, CC, or BCC
> lists, I want the messages discarded.
>
> This would eliminate 99.5% of our spam.


--
Ian Freislich