Re: [exim] Allow mails only from senders in a partcular doma…

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Autor: Marc Haber
Datum:  
To: exim-users
Betreff: Re: [exim] Allow mails only from senders in a partcular domain
On Tue, 27 Jun 2006 12:01:46 +0530, "Lekshmi A R"
<lekshmiar@???> wrote:
>    I wanted to configure my mail servers to allow mails only from senders with mail id *@xyz.com
> and not any other domain instead of xyz.com.


Bad idea. The envelope sender is trivially forged. Under no
circumstances is this useable as authentication.

>require verify        = sender
>accept  domains       = +local_domains
>accept !domains       = +local_domains
>    !condition     = ${if eq{$sender_address_domain}{xyz.com} {no} {yes} }
>drop    message       = Invalid Sender Address

>
>
>Whether this will work. But how to populate the variable sender_address_domain.


Exim populates this variable with data read from the envelope sender
of the incoming message.

Greetings
Marc

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