[pfx] Howto Whitelist an unknown Sender Domain

I've dmarc configured to send out reports to those domains, that have dmarc configuration too. A lot of those are misconfigured in one way or another. Mostly the mailaddress stated in DNS is not accepting my mails or is not existent at all. But some have got their mailserver misconfigured

[pfx] Relaying Teams Invitations send by Microsoft365 via Postfix to the Internet

Hello, We've got a single user needing Micro$oft Teams. This users mailaccount u...@contenso.com is configured on our server AND within Microsoft365 as sending address for the invitations. All other mail accounts are local and send via postfix. With blimmen Microsoft365 the invitation mails are

[pfx] Re: Redirecting mail with an mx record containing *.protection.outlook.com or *.prod.outlook.com to a different transport

Am 07.11.2023 um 17:26 schrieb Wietse Venema via Postfix-users: Viktor Dukhovni via Postfix-users: On Tue, Nov 07, 2023 at 08:14:04AM -0500, Wietse Venema via Postfix-users wrote: Another option would be to use the DNS resolver (Bind, unbound, etc) support to manipulate zone lookups. But the

[pfx] Redirecting mail with an mx record containing *.protection.outlook.com or *.prod.outlook.com to a different transport

Hello, as many people we do have problems delivering mail through the Microsoft MX'es which are used by a lot of company domains. All these domains use MX records with *.protection.outlook.com or *.prod.outlook.com. I am looking for a way to send mail to domains that have such a mx record throu