On Wed, Nov 15, 2000 at 05:52:57PM +0100,
raphaelb <rberghmans@???> is thought to have said:
> Since two days, somebody on Internet, send a lot of mail (every 2 minutes) to an unavailable mailbox (@hotmail.com or @yahoo.com) using as FROM an unavailable address (always different set of random letters as local-part) from our domain. Therefore, the mailserver of hotmail or yahoo send a error mail for unavailable recipient to our mailserver that try to deliver it but the recipient doesn't exist too. Then the mail is frozen because the from address in the envelope of the mail sent bye the mail-daemon of yahoo or hotmail is equal to '<>' !
>
> How is it possible to prevent this kind of mail bombing ?
>
> PS : I hope that my explanation is not too confused ?
Look at the receiver_verify option to refuse mail to
invaliduser@??? at SMTP time. That way you never even accept the
messages onto your system unless they are for a valid address at your site.
Tabor
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Tabor J. Wells twells@???
Fsck It! Just another victim of the ambient morality
