> From the times I was using sendmail, I remember that in case when
> forward/reverse DNS didn't match, sendmail logged something like
> unknown (reverse.dns.hostname) [ip.ad.dr.ess]
Log?
relay=hedefserver.com [2.56.152.122] (may be forged)
Or are you talking about the Received: header?
Wietse Venema:
> Jaroslaw Rafa:
> > Dnia 29.04.2021 o godz. 14:34:15 Matus UHLAR - fantomas pisze:
> > >
> > > Once again:
> > > The result of reverse resolution will NOT be used, unless it's verified by
> > > forward resolution.
> >
> > >From the times I was using sendmail, I remember that in
Dnia 29.04.2021 o godz. 11:27:28 Wietse Venema pisze:
> > >From the times I was using sendmail, I remember that in case when
> > forward/reverse DNS didn't match, sendmail logged something like
> >
> > unknown (reverse.dns.hostname) [ip.ad.dr.ess]
>
> I thought that sendmail logs the HELO
>
>
Jaroslaw Rafa:
> Dnia 29.04.2021 o godz. 14:34:15 Matus UHLAR - fantomas pisze:
> >
> > Once again:
> > The result of reverse resolution will NOT be used, unless it's verified by
> > forward resolution.
>
> >From the times I was using sendmail, I remember that in case when
> forward/reverse DNS
Dnia 29.04.2021 o godz. 14:34:15 Matus UHLAR - fantomas pisze:
>
> Once again:
> The result of reverse resolution will NOT be used, unless it's verified by
> forward resolution.
>From the times I was using sendmail, I remember that in case when
forward/reverse DNS didn't match, sendmail logged
On 29.04.21 06:25, Fourhundred Thecat wrote:
Postfix does not show hostname for a connecting IP address, when the
hostname does not have reverse lookup:
Example from my log:
warning: hostname zg-0416b-243.stretchoid.com does not resolve to
address 192.241.220.141: Name or service not known
> On 2021-04-29 08:00, lists wrote:
Sorry for the top posting.
http://www.stretchoid.com/
has a way to opt out. Unfortunately they want you to give them your IP space
rather than the other way around. They use a floating IP scheme and can't
easily be blocked.
stretchoid was just an example.
> On 2021-04-29 10:25, Matus UHLAR - fantomas wrote:
On 29.04.21 06:25, Fourhundred Thecat wrote:
Postfix does not show hostname for a connecting IP address, when the
hostname does not have reverse lookup:
Example from my log:
warning: hostname zg-0416b-243.stretchoid.com does not resolve to
On 29.04.21 06:25, Fourhundred Thecat wrote:
Postfix does not show hostname for a connecting IP address, when the
hostname does not have reverse lookup:
Example from my log:
warning: hostname zg-0416b-243.stretchoid.com does not resolve to
address 192.241.220.141: Name or service not known
: April 28, 2021 9:25 PM
To: postfix-users@postfix.org
Subject: Postfix shows unknown instead of resolved hostname
Hello,
Postfix does not show hostname for a connecting IP address, when the
hostname does not have reverse lookup:
Example from my log:
warning: hostname zg-0416b-243
Hello,
Postfix does not show hostname for a connecting IP address, when the
hostname does not have reverse lookup:
Example from my log:
warning: hostname zg-0416b-243.stretchoid.com does not resolve to
address 192.241.220.141: Name or service not known
connect from unknown[192.241.220.141]
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