[BlueOnyx:06801] Re: Server haked?

[Oscar Zovo]

On Thu, Mar 24, 2011 at 5:12 PM, Hugo Sesma <hsesma at gmail.com> wrote:

> Hi,
>
> yesterday I've noticed tha the mail log has entries as shown in the log
> with an empty from=<> field is this a hack or there is any other sympthom I
> could look for.
>
>
>
The empty from=<>, means that mail was generated by the MAILER_DAEMON (ie.
by the system), it mostly happens when messages are bounced back to the
sender. Is your system correctly rejecting mail for unknown users? Or are
you accepting mail then bounce them if you can't deliver?

Regards,
OZ.
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