Re: [exim] Exim rejects: syntactically invalid argument

On Wednesday 28 September 2005 11:14, Tony Finch wrote:

> There are plenty of other things that turn up in HELO hostnames which
> *are* an accurate indicator of evil behaviour.

I have to ask: what do the malefactors expect to accomplish by sending
helo strings that violate such tests (which I think are well-known)?