Off-topic portions removed. Ditto Stan's comment: this thread needs
to come to an end. I already responded to the off-topic assertions
back in September, suggesting that it move to SDLU. I saw some
silliness in this thread, but I am refusing to be dragged into it.[1]
On Sun, Oct 21, 2012 at 02:21:50PM +0000, Mike's unattended mail
wrote:
> On 2012-10-21, Mark Goodge <m...@good-stuff.co.uk> wrote:
> > I may be wrong, but I don't think that
> > reject_non_fqdn_helo_hostname will reject an IP address EHLO. At
> > least, the implication of the docuementation is that it does not,
> > since it says that it enforces the RFC requirements and, as you
> > rightly say, an IP address is compliant. But it will reject a
> > non-FQDN hostname that is not an IP address, and rightly so.
>
> Well I understood reject_non_fqdn_helo_hostname to reject all EHLO
> IPs and all non-resolvable FQDNs, and possibly also resolvable
> FQDNs that do not appear in the senders address field.
Quoting postconf(5) manual:
reject_non_fqdn_helo_hostname (with Postfix < 2.3:
reject_non_fqdn_hostname)
Reject the request when the HELO or EHLO hostname is not
in fully-qualified domain form, as required by the RFC. ...
What does this say about resolvable or not?
What does this say about the sender address?
It says, "Reject the request when the HELO or EHLO hostname is not
in fully-qualified domain form, as required by the RFC." And that
is what it means.
TBH, I am not sure how a bracketed IP address HELO would be treated
by reject_non_fqdn_helo_hostname, but I suspect that it would not
match. A bracketed IP address is specially defined as a valid domain
name for HELO or for sender/recipient addresses. Ergo I would think
it's fully-qualified.
> If you're correct, then
> it doesn't have the problem that I thought it had.
Correctness in Postfixland can be determined by reference to the
documentation, as I just did above.
[1] Except insofar as that editorial comment dragged me into it. :)
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