That’s not an Office 365 rejection. It was refused by alpha-com.de, and you’ll have to discuss it with them.
Aloha, Michael. — “Your Spam Specimen Has Been Processed,” ________________________________ From: mailop <mailop-boun...@mailop.org> on behalf of Uwe Arnold via mailop <mailop@mailop.org> Sent: Tuesday, August 26, 2025 12:55:03 PM To: mailop@mailop.org <mailop@mailop.org> Subject: [EXTERNAL] [mailop] Contacts for Lufthansa Hi guys, this is my first email here. In a private matter I used the reply button on some Lufthansa Feedback topic. Then I got a Office 365 rejection. Status code: 550 5.7.1 Sender Address: customer.relations+SRS=mcOit=3G=itnomad.de=uwe.arn...@lufthansa.com Recipient Address: customer.relati...@lufthansa.com Error Details Error: 550-5.7.1 This email was rejected because it violates our security policy. 550 5.7.1 Die digitale Signatur der E-Mail ist ung?ltig. Message rejected by: mail.alpha-com.de Notification Details Sent by: FRWPR09MB7955.eurprd09.prod.outlook.com Would be great if you could refer me to the correct mail admins. this doesn't look right. Best regards, Uwe
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