On 28/12/05, Dirk the Daring <[EMAIL PROTECTED]> wrote:
> I've noticed a lot of SPAM does not have an FQDN in the HELO. It'll
> have just "localhost" or even omit a hostname entirely. Obviously, if
> the HELO is an IP address in square brackets, that's fine.
>
> Is there any danger of rejecting "legitimate" E-Mail if I write my
> mimedefang-filter to:
>
> 1) Absent an IP address in square brackets, require a
> an alphanumeric string in the HELO
>
> 2) Reject a HELO where the alphanumeric string is not
> a FQDN (using a regex looking for at least
> one "." in the HELO string)
A number of MUAs, including Outlook, will AFAIK fall foul of that requirement.
--
Please keep list traffic on the list.
Rob MacGregor
Whoever fights monsters should see to it that in the process he
doesn't become a monster. Friedrich Nietzsche
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