You could still use netcat or write your own C program to talk SMTP (e.g.
like some of the bulk mail programs used by spammers) which doesn't do
telnet negotiation.

- Morrow

Chris Keladis wrote:
> 
> Wouldn't it be possible to detect telnet negotiation (OOB) going on and
> drop the connection?
> 
> I agree with Paul however, these measures wont stop abuse of tcp/25, but
> it makes an interesting thread at least :)
> 
> Regards,
> 
> Chris.
>

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