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Re: rejecting clients greeting me with my own name
From: Ralf Hildebrandt <Ralf.Hildebrandt_at_nospam>Date: Mon Oct 04 2010 - 18:31:57 GMT
To: postfix-users@postfix.org
* Jeroen Geilman <jeroen@adaptr.nl>:
>
> Please don't send these redundant messages. It's a good indication of
> your general messaging skills.
>
>
> On 10/04/2010 07:56 PM, martin f krafft wrote:
> >also sprach Jeroen Geilman<jeroen@adaptr.nl> [2010.10.04.1822 +0200]:
> >>Where, exactly ?
> >The HELO greeting.
> >
> >>The real client IP ? That can't be trivially spoofed, and so would
> >>actually BE your server.
> >I have seen clients who apparently connect to my MX with the IP and
> >then send the IP after HELO.
>
> With YOUR IP ? That's highly unlikely, to the point of unbelievability.
I've seen those as well; not from within my networks, but yes. I've
seen them!
-- Ralf Hildebrandt Geschäftsbereich IT | Abteilung Netzwerk Charité - Universitätsmedizin Berlin Campus Benjamin Franklin Hindenburgdamm 30 | D-12203 Berlin Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962 ralf.hildebrandt_at_charite.de | http://www.charite.de