Author: Chris Lear Date: To: 'Exim Users List' Subject: Re: [exim] Bogus HELOs
* Mark Smith wrote (05/20/05 10:58): > Are there any *valid* reasons for a mailserver's HELO greeting not matching
> the hostname obtained from rDNS?
I think so. In a virtual server environment. Say one server has 10 DNS
records resolving to 1 IP address. Only one name will be returned by
rDNS, but any can legitimately be used in the HELO greeting.
This should still pass exim's validity check, though, if my
understanding is correct.
