On Wed, May 29, 2002 at 09:43:03AM +0100, David Woodhouse wrote:
>
> marc_news@??? said:
> > deny message = "Invalid domain or IP given in HELO/EHLO"
> > !condition = ${if match{$sender_helo_name}{\\\.}{yes}{no}}
>
> ISTR there were many Microsoft SMTP clients which would send only their
> NETBIOS machine name in the HELO, instead of a fully-qualified domain.
Are they used mostly over a LAN or over the internet too?
(are you talking of MUAs that do SMTP to relay their mail?))
Details on what clients and how old they are?
If so, I don't have to deal with that, but you could add a rule to accept
mail if it came from the range of your client pool or if the client had
authenticated.
> I don't know if that's still the case --
I'll watch my logs to find out.
> or indeed if you care :)
Not much ;-)
(but thank you for the info, it's useful)
Marc
--
Microsoft is to operating systems & security ....
.... what McDonalds is to gourmet cooking
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