On 07-07-2021 5:31 pm, Richard wrote:
If the "hostname has no DNS A ... record", i.e., the *hostname*
presented on the HELO/EHLO doesn't resolve, then no IPnumber will be
returned [to do anything with].
On 07.07.21 17:51, post...@ptld.com wrote:
Yes, if the hostname has no DNS records then ofcou
post...@ptld.com wrote:
> Please RTFM Postfix documentation. If it does not mention IP addresses
> then it does not use the IP addres,
I did read the manual which says:
"Reject the request when the HELO or EHLO hostname has no DNS A or MX
record."
Good. Does it mention IP addresses? No it does
The principle is very simple: Postfix documentation describes what
Postfix does.
The documentation does not describe all the things that Postfix
does not do. That would make the documentation much larger, and
much harder to read.
Understood.
> Please RTFM Postfix documentation. If it does not mention IP addresses
> then it does not use the IP addres,
I did read the manual which says:
"Reject the request when the HELO or EHLO hostname has no DNS A or MX
record."
Good. Does it mention IP addresses? No it doesn't. Therefore
it doesn't
post...@ptld.com:
> > On 07-07-2021 5:31 pm, Richard wrote:
> >
> > If the "hostname has no DNS A ... record", i.e., the *hostname*
> > presented on the HELO/EHLO doesn't resolve, then no IPnumber will be
> > returned [to do anything with].
>
> Yes, if the hostname has no DNS records then ofcours
On 07-07-2021 5:31 pm, Richard wrote:
If the "hostname has no DNS A ... record", i.e., the *hostname*
presented on the HELO/EHLO doesn't resolve, then no IPnumber will be
returned [to do anything with].
Yes, if the hostname has no DNS records then ofcourse it has no IP. But
if the hostname DOE
post...@ptld.com:
> > On 07-07-2021 4:39 pm, Wietse Venema wrote:
> > Please RTFM Postfix documentation. If it does not mention IP addresses
> > then it does not use the IP addres,
>
> I did read the manual which says:
> "Reject the request when the HELO or EHLO hostname has no DNS A or MX
> reco
On 07-07-2021 5:22 pm, Kevin N. wrote:
reject_invalid_helo_hostname
Would reject an invalid host name such as "ho+st", but a valid hostname
such as "host" would pass
reject_non_fqdn_helo_hostname
Would reject a non fully-qualified hostname such as "host", but a
fully-qualified one such as "
> Date: Wednesday, July 07, 2021 16:54:42 -0400
> From: post...@ptld.com
>
> I did read the manual which says:
> "Reject the request when the HELO or EHLO hostname has no DNS A or
> MX record."
>
> Best to my knowledge "DNS A" means IP so the manual does mention IP
> addresses, but then it does
reject_invalid_helo_hostname
Would reject an invalid host name such as "ho+st", but a valid hostname
such as "host" would pass
(https://datatracker.ietf.org/doc/html/rfc2821#section-2.3.5):
501 5.5.2 : Helo command rejected: Invalid name
reject_non_fqdn_helo_hostname
Would reject a non
On 07-07-2021 4:39 pm, Wietse Venema wrote:
Please RTFM Postfix documentation. If it does not mention IP addresses
then it does not use the IP addres,
I did read the manual which says:
"Reject the request when the HELO or EHLO hostname has no DNS A or MX
record."
Best to my knowledge "DNS A"
post...@ptld.com:
> Under smtpd_helo_restrictions there is
> reject_invalid_helo_hostname
> reject_non_fqdn_helo_hostname
> reject_unknown_helo_hostname
>
>
> #1) What is the difference between invalid and non_fqdn? In plain speak
> they sound the same to me. If its not fqdn isn't
Under smtpd_helo_restrictions there is
reject_invalid_helo_hostname
reject_non_fqdn_helo_hostname
reject_unknown_helo_hostname
#1) What is the difference between invalid and non_fqdn? In plain speak
they sound the same to me. If its not fqdn isn't that malformed?
#2) I assume to p
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