On 04 Oct 2018, at 00:00, Tobi wrote:
> if your auth senders spoof from headers: block their login account and
> terminate their service
Nothing necessarily wrong with spoofing From:
noreply@ is a spoofed From:
>> we're running a small smtp send only service for authenticated users
>> only. Eve
if your auth senders spoof from headers: block their login account and
terminate their service
Am 02.10.18 um 21:17 schrieb Stefan Bauer:
> Hi,
>
> we're running a small smtp send only service for authenticated users
> only. Even though we only accept allowed combinations of authenticated
> user
On 02.10.18 21:17, Stefan Bauer wrote:
> Is this a good idea to check if envelope from and from matches and if
> so, howto do it in postfix?
Seriously? A "howto" has been posted on this very mailing list a few
hours ago. Mailing list archives are so useful...
-Ralph
Hi,
we're running a small smtp send only service for authenticated users only.
Even though we only accept allowed combinations of authenticated user and
pre-defined envelope from addresses with access_maps, some smartasses
started to spoof From: addresses so we got bad reputation at receiver sites
