Re: Null sender rewrite from a specified host.

2021-07-07 Thread Xavier Beaudouin
Hi Wieste, > To cut through the noise: > > 1 - Configure a Postfix smtpd process on an additional IP addresss > or TCP port ***THAT ONLY THIS CLIENT WILL CONNECT TO. > > 2 - Configure that smtpd process with an smtpd_command_filter that > replaces "MAIL FROM:<>" with the preferred

Re: Null sender rewrite from a specified host.

2021-07-07 Thread Wietse Venema
To cut through the noise: 1 - Configure a Postfix smtpd process on an additional IP addresss or TCP port ***THAT ONLY THIS CLIENT WILL CONNECT TO. 2 - Configure that smtpd process with an smtpd_command_filter that replaces "MAIL FROM:<>" with the preferred address. # Listen

Re: Null sender rewrite from a specified host.

2021-07-07 Thread Emmanuel Fusté
Le 07/07/2021 à 15:41, Emmanuel Fusté a écrit : Le 07/07/2021 à 15:36, Emmanuel Fusté a écrit : Le 07/07/2021 à 15:26, Wietse Venema a écrit : Emmanuel Fust?: Le 07/07/2021 ? 15:06, Wietse Venema a ?crit?: Viktor Dukhovni: On Tue, Jul 06, 2021 at 12:56:50PM +0200, Xavier Beaudouin wrote:

Re: Null sender rewrite from a specified host.

2021-07-07 Thread Viktor Dukhovni
> On 7 Jul 2021, at 9:43 am, Emmanuel Fusté > wrote: > > arghh no, sorry, smtp client must be added in between. > A little more complex No, just a dedicated SMTP listener service that runs in parallel with the existing SMTP server. Everything else is the same... The SMTP server replaces

Re: Null sender rewrite from a specified host.

2021-07-07 Thread Emmanuel Fusté
Le 07/07/2021 à 15:36, Emmanuel Fusté a écrit : Le 07/07/2021 à 15:26, Wietse Venema a écrit : Emmanuel Fust?: Le 07/07/2021 ? 15:06, Wietse Venema a ?crit?: Viktor Dukhovni: On Tue, Jul 06, 2021 at 12:56:50PM +0200, Xavier Beaudouin wrote: I currently have an appliance that misuse the

Re: Null sender rewrite from a specified host.

2021-07-07 Thread Emmanuel Fusté
Le 07/07/2021 à 15:26, Wietse Venema a écrit : Emmanuel Fust?: Le 07/07/2021 ? 15:06, Wietse Venema a ?crit?: Viktor Dukhovni: On Tue, Jul 06, 2021 at 12:56:50PM +0200, Xavier Beaudouin wrote: I currently have an appliance that misuse the null sender (mail from:<>) to send mail.

Re: Null sender rewrite from a specified host.

2021-07-07 Thread Wietse Venema
Emmanuel Fust?: > Le 07/07/2021 ? 15:06, Wietse Venema a ?crit?: > > Viktor Dukhovni: > >> On Tue, Jul 06, 2021 at 12:56:50PM +0200, Xavier Beaudouin wrote: > >> > >>> I currently have an appliance that misuse the null sender (mail > >>> from:<>) to send mail. > >>> > >>> Unfortunatly, this

Re: Null sender rewrite from a specified host.

2021-07-07 Thread Emmanuel Fusté
Le 07/07/2021 à 15:06, Wietse Venema a écrit : Viktor Dukhovni: On Tue, Jul 06, 2021 at 12:56:50PM +0200, Xavier Beaudouin wrote: I currently have an appliance that misuse the null sender (mail from:<>) to send mail. Unfortunatly, this appliance is closed source and we can only setup : fixed

Re: Null sender rewrite from a specified host.

2021-07-07 Thread Wietse Venema
Viktor Dukhovni: > On Tue, Jul 06, 2021 at 12:56:50PM +0200, Xavier Beaudouin wrote: > > > I currently have an appliance that misuse the null sender (mail > > from:<>) to send mail. > > > > Unfortunatly, this appliance is closed source > > and we can only setup : fixed ip address and recipient

Re: Null sender rewrite from a specified host.

2021-07-06 Thread Viktor Dukhovni
On Tue, Jul 06, 2021 at 12:56:50PM +0200, Xavier Beaudouin wrote: > I currently have an appliance that misuse the null sender (mail > from:<>) to send mail. > > Unfortunatly, this appliance is closed source > and we can only setup : fixed ip address and recipient address on GUI > (nothing else,

Null sender rewrite from a specified host.

2021-07-06 Thread Xavier Beaudouin
Hello there, I ran into a specific situation. I currently have an appliance that misuse the null sender (mail from:<>) to send mail. Unfortunatly, this appliance is closed source and we can only setup : fixed ip address and recipient address on GUI (nothing else, even if I try to h4x0r the