Whitelist question

[Julian Field]

At 14:41 22/08/2003, you wrote:
>Hi
>
>Is it possible to whitelist by hostname in addition to address, domain and
>IP?
>
>For example
>
>From:   server.domain.tld       yes

In which case how are you sure they mean "from the client IP address whose
text equivalent is server.domain.tld" and not "from the sender address
domain name server.domain.tld"
?


>I've found that whitelisting by domain is allowing the Sobig spam to get
>through and its causing havoc on the client's side.
>
>Perhaps there is a better way of doing whitelisting?
>
>Thanks Matthew

--
Julian Field
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