Dear postfix users, admins and guru's.
Today I was alerted to a new 'problem'. As I was unable to find any
information on it online, I decided to present it to you..
An important application we run has, unfortunately, an internal
mail-queuing system that is, to say the least, sub-optimal.
A t
Ehlers, Y.W. (Ydo):
> This usage of a single SPF record results in an existing domain from
> Postfix's? perspective.
Nope. It has nothing to do with SPF. Instead, it's a borked DNS
server.
reject_unknown_sender/recipient_domain looks for MX, A, and
records (if compiled with IPv6 support).
W
Wietse,
you're absolutely right.
I thought I checked my findings correctly, but I missed this one.
I'll direct my attention to my networking colleagues for a properly
configured DNS server.
Ydo Ehlers
On 28-10-2019 12:11, Wietse Venema wrote:
> Ehlers, Y.W. (Ydo):
>> This usage of a single
Ehlers, Y.W. (Ydo):
There is no MX record, there is no A record, so mail can not be delivered.
And Microsoft tops it off by explicitely claiming no e-mail will be send
from this domain
for the record: one like to use RFC 7505 to express "this domain don't
send / receive email"
adding an
