Return-Path: <> From: Mail Delivery System To: info@example.com Subject: Warning: message 1tR2kq-00Cd4e-0x delayed 24 hours Auto-Submitted: auto-replied Date: Fri, 06 Nov 2026 09:02:11 +0100 MIME-Version: 1.0 Content-Type: multipart/report; report-type=delivery-status; boundary="1730880131-eximdsn-846930886" --1730880131-eximdsn-846930886 Content-type: text/plain; charset=us-ascii This message was created automatically by mail delivery software. A message that you sent has not yet been delivered to one or more of its recipients after more than 24 hours on the queue on mail.hosting.example. The message identifier is: 1tR2kq-00Cd4e-0x The subject of the message is: Uw factuur 2026-1187 The date of the message is: Thu, 05 Nov 2026 08:58:40 +0100 The address to which the message has not yet been delivered is: klant.example@outlook.com host outlook-com.olc.protection.outlook.com [192.0.2.140] Delay reason: SMTP error from remote mail server after MAIL FROM: SIZE=48211: 451 4.7.500 Server busy. Please try again later from [203.0.113.25]. (AS843) [DB5PEPF00014B9A.eurprd04.prod.outlook.com 2026-11-06T08:01:55.312Z 08DCF2A1B3C4D5E6] No action is required on your part. Delivery attempts will continue for some time, and this warning may be repeated at intervals if the message remains undelivered. Eventually the mail delivery software will give up, and when that happens, the message will be returned to you. --1730880131-eximdsn-846930886 Content-type: message/delivery-status Reporting-MTA: dns; mail.hosting.example Action: delayed Final-Recipient: rfc822;klant.example@outlook.com Status: 4.7.500 Remote-MTA: dns; outlook-com.olc.protection.outlook.com Diagnostic-Code: smtp; 451 4.7.500 Server busy. Please try again later from [203.0.113.25]. (AS843) Will-Retry-Until: Thu, 12 Nov 2026 08:58:40 +0100 --1730880131-eximdsn-846930886 Content-type: text/rfc822-headers Return-Path: From: Boekhouding Example To: klant.example@outlook.com Subject: Uw factuur 2026-1187 Date: Thu, 05 Nov 2026 08:58:40 +0100 Message-ID: --1730880131-eximdsn-846930886--