On 2023-06-12 at 04:19:12 UTC-0400 (Mon, 12 Jun 2023 20:19:12 +1200)
Peter via Postfix-users
is rumored to have said:
> Technically it's an invalid MX record because MX records must point to a
> hostname, not an IP address.
>
> They are probably trying (but failing) to implement a null MX record
Technically it's an invalid MX record because MX records must point to a
hostname, not an IP address.
They are probably trying (but failing) to implement a null MX record:
https://www.rfc-editor.org/rfc/rfc7505
Peter
On 12/06/23 19:50, wesley--- via Postfix-users wrote:
Note there is also
I saw some domains have MX pointing to 127.0.0.1. what does this mean?
This will tell the sender of the email to connect to 127.0.0.1 which is itself.
It will send the mail program chasing its own tail.
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Postfix-users mailing list -- postfix-users@
Note there is also RFC 7505 "Null MX" where you simply add "IN MX 0 ." to
any DNS name you wish not to send or accept e-mail. (this is designed to
work around implicie MX records when A record is present).
On 12.06.23 07:50, wesley--- via Postfix-users wrote:
I saw some domains have MX pointing
Dnia 10.06.2023 o godz. 17:33:06 Gerd Hoerst via Postfix-users pisze:
my entry e.g.
600 IN TXT "v=spf1 a mx -all"
that mean all servers listet in MX enrties of my domain are allowed
to send emails from my domain
So if you receive an email from my domain which are not sent from
on
Dnia 10.06.2023 o godz. 17:33:06 Gerd Hoerst via Postfix-users pisze:
> my entry e.g.
>
> 600 IN TXT "v=spf1 a mx -all"
>
> that mean all servers listet in MX enrties of my domain are allowed
> to send emails from my domain
>
> So if you receive an email from my domain which are no
Hi !
The dns entry provides info from which mailservers the receiptient
should only accpet email from entire domain... whta the receiptiten is
doing with that information is up to your settings in postfix
my entry e.g.
600 IN TXT "v=spf1 a mx -all"
that mean all servers listet in
wesley--- via Postfix-users skrev den 2023-06-09 02:17:
Hello,
for this spf setting,
bar.org. 3600 IN TXT "v=spf1 -all"
no ip addresses were provided.
does it mean all IP are passed, or no IP can pass?
no ip will pass
essentially all mails is rejected from that domain if recipient enforc
On November 18, 2022 3:04:44 AM UTC, linux...@gmx.net wrote:
>Dear List,
>
>I have enabled policyd-spf in postfix:
>
>smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated,
>reject_unauth_destination, check_policy_service unix:private/policyd-spf
>
>
>but can you help that
Dear List,
I have enabled policyd-spf in postfix:
smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated,
reject_unauth_destination, check_policy_service unix:private/policyd-spf
but can you help that, when a SPF check fails, where should I setup the reject
action?
Thank
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