Urgent help needed...please!!

[Raymond Dijkxhoorn]

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Hi!

> all are undelivered mails send back to us but in the first place, we
> did not sent them out. Someone is masking as our domain and sending
> out spams. Cause the mails that get delivered back is sent to email
> accounts that does not exist. Mailscanner is able to filter them but
> not fast enough as the mails comes in splitseconds. I am having like
> 1000 mails in queues after 10 minutes of starting mailscanner.
>
>
> Anyway I can filter this at MTA level? Or can i set sendmail to reject
> mails that have "blank" from field?

You can use RBL's to filter on MTA level, have a look at www.dsbl.org for
example.

Bye,
Raymond.

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