On Mon, 10 Jan 2005, Tony Finch wrote:
> Actually, Exim's HELO name syntax checking is very lax and it's quite
> happy with bare IP addresses, double dots, etc. The check above is very
> effective and highly recommended.
A bare IP (v4) address IS a syntactically valid host name.
I understand we have 3Com to blame for this. If only a different
separator had been used for domain names...
--
Philip Hazel University of Cambridge Computing Service,
ph10@??? Cambridge, England. Phone: +44 1223 334714.
Get the Exim 4 book: http://www.uit.co.uk/exim-book