[Exim] Re: exim : inbound attack , please help.

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Autor: Miquel van Smoorenburg
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A: exim-users
Assumpte: [Exim] Re: exim : inbound attack , please help.
In article <32925.202.53.76.18.1082732302.squirrel@202.53.76.18>,
Ravi kumar <ravi@???> wrote:
>iam hosting multiple domains ( virtual hosting ) .
>iam getting lot of incomming spam mails to perticular domain abc.com
>sending lot of zunk mails to random(non existing ) mail address of abc.com
>example: 123@??? , sdfs@??? , asdasd@???
>server load reached 100 so i removed that domain and even also deleted zone
>for that domain but still iam getting spam mails
>How to stop them , even there is no MX record - how one can send mails to
>exim .


Are you actually verifying addresses and rejecting unknown recipients
at SMTP time, or are you accepting all those addresses, sending a
non-delivery report back to the sender later ?

The latter sounds like something that would indeed be able to
push up the load on your server. I recommend the former.

Mike.