From headers:

 

Received: from BL0GCC02FT014.eop-gcc02.prod.protection.outlook.com

(2a01:111:f400:7d05::209) by CYXPR09CA0010.outlook.office365.com

(2603:10b6:930:d4::15) with Microsoft SMTP Server (version=TLS1_2,

cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6319.25 via Frontend

Transport; Thu, 20 Apr 2023 11:49:06 +0000

Authentication-Results: spf=softfail (sender IP is 63.88.93.251)

smtp.mailfrom=open-xchange.com; dkim=fail (signature did not verify)

header.d=open-xchange.com;dmarc=fail action=oreject

header.from=open-xchange.com;compauth=none reason=452

Received-SPF: SoftFail (protection.outlook.com: domain of transitioning

open-xchange.com discourages use of 63.88.93.251 as permitted sender)

 

From: Aki Tuomi <aki.tuomi@open-xchange.com>
Date: Thursday, April 20, 2023 at 07:49
Subject: [EXTERNAL] Re: Mailing list is being Spam Filtered by O-365

 

On 20/04/2023 14:18 EEST White, Daniel E. (GSFC-770.0)[AEGIS] via dovecot <dovecot@dovecot.org> wrote:

 

 

Is there any chance that SPF and DKIM records could be added to appear in the headers ?

 

The gubba-mint folks are getting extremely medieval about email security.

 

 

Um? Those already are added? Or what do you mean?

 

Aki