On Wed, 17 Mar 2004, Kyle Dippery wrote:
> But at one point I telnetted to my server to test it, and
> noticed that if I ignored the "Bad HELO:" message and proceeded
> on to "MAIL FROM:", I was able to complete my message normally.
From RFC 2821:
An SMTP server MAY verify that the domain name parameter in the EHLO
command actually corresponds to the IP address of the client.
However, the server MUST NOT refuse to accept a message for this
reason if the verification fails: the information about verification
failure is for logging and tracing only.
Of course, there are other reasons for rejecting EHLO; Exim doesn't try
to distinguish, and leaves it up to you to make the choice, as another
poster pointed out.
--
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
