Re: [Exim] Limited EHLO/HELO checking receipee

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.

I don't know if that's still the case -- or indeed if you care :)

--
dwmw2