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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