{"id":290410,"date":"2024-01-12T16:13:22","date_gmt":"2024-01-12T15:13:22","guid":{"rendered":"https:\/\/www.borncity.com\/blog\/?p=290410"},"modified":"2024-01-12T16:13:22","modified_gmt":"2024-01-12T15:13:22","slug":"exchange-online-stoerung-ex703958-5-11-jan-2024","status":"publish","type":"post","link":"https:\/\/borncity.com\/blog\/2024\/01\/12\/exchange-online-stoerung-ex703958-5-11-jan-2024\/","title":{"rendered":"Exchange Online: St\u00f6rung EX703958 (5-11. Jan. 2024)"},"content":{"rendered":"

\"Mail\"Bei Microsofts Exchange Online hat es vom 5. bis 11. Januar 2024 eine St\u00f6rung (EX703958) gegeben, bei dem der Dienst nicht mehr funktional war. Nutzer konnten keine E-Mails \u00fcber Exchange Online empfangen oder versenden.<\/p>\n

<\/p>\n

St\u00f6rung EX703958 (12. Jan. 2024)<\/h2>\n

Blog-Leser Andreas P. hat mir den Statusauszug f\u00fcr \"Share: Incident: EX703958, impacted service: Exchange Online, impacted feature: delivery, current status is: Service degradation\" zukommen lassen (danke daf\u00fcr).<\/p>\n

Published Time: 11.01.2024 23:26:51<\/p>\n

Title: Some users may be unable to send or receive email messages and receive a Non-Delivery Report (NDR)<\/p>\n

User impact: Users may be unable to send or receive email messages and receive a NDR with a 550 or 554 error code.<\/p>\n

More info: This issue only occurs if either the sender or user who is receiving the message is utilizing a specific third-party anti-spam service. Senders receive the NDR which states that the message has been rejected due to a 550 or 554 error code and that their host IP address is listed on the third-party anti-spam service.<\/p>\n

The error messages state \"550 5.7.350 Remote server returned message detected as spam\", \"554 5.7.1 Service unavailable; Client host [xxx.xxx.xxx.xxx] blocked\", or \"\u200e550 5.7.1 This email was rejected because it violates our security policy.\"<\/p>\n

Current status: We're continuing to work in conjunction with the third-party service to delist IP addresses which are blocked on the third-party's anti-spam service, In parallel, we're continuing to develop the anti-spam optimizations for long-term mitigation, which we'll provide a timeline for deployment to the affected environment when available.<\/p>\n

Scope of impact: This issue may affect any user's mail flow if the recipient is leveraging a specific third-party anti-spam service to filter email messages.<\/p>\n

Next update by: Wednesday, January 17, 2024, at 11:30 PM UTC<\/p>\n

Published Time: 09.01.2024 23:57:23<\/p>\n

Title: Some users may be unable to send or receive email messages and receive a Non-Delivery Report (NDR)<\/p>\n

User impact: Users may be unable to send or receive email messages and receive a NDR with a 550 or 554 error code.<\/p>\n

More info: This issue only occurs if either the sender or user who is receiving the message is utilizing a specific third-party anti-spam service. Senders receive the NDR which states that the message has been rejected due to a 550 or 554 error code and that their host IP address is listed on the third-party anti-spam service.<\/p>\n

The error messages state \"550 5.7.350 Remote server returned message detected as spam\", \"554 5.7.1 Service unavailable; Client host [xxx.xxx.xxx.xxx] blocked\", or \"\u200e550 5.7.1 This email was rejected because it violates our security policy.\"<\/p>\n

Current status: We're working in conjunction with the third-party service to delist a number of the IP addresses which are blocked on the third-party's anti-spam service. While this has successfully mitigated the issue for a majority of users, we're developing a series of anti-spam system optimizations to further address the issue. We'll share more details regarding the timeline for these optimizations once they become available.<\/p>\n

Scope of impact: This issue may affect any user's mail flow if the recipient is leveraging a specific third-party anti-spam service to filter email messages.<\/p>\n

Next update by: Thursday, January 11, 2024, at 11:30 PM UTC<\/p>\n

Published Time: 08.01.2024 23:57:14<\/p>\n

Title: Some users may be unable to send or receive email messages and receive a Non-Delivery Report (NDR)<\/p>\n

User impact: Users may be unable to send or receive email messages and receive a NDR with a 550 or 554 error code.<\/p>\n

More info: This issue only occurs if either the sender or user who is receiving the message is utilizing a specific third-party anti-spam service. Senders receive the NDR which states that the message has been rejected due to a 550 or 554 error code and that their host IP address is listed on the third-party anti-spam service.<\/p>\n

The error messages state \"550 5.7.350 Remote server returned message detected as spam\", \"554 5.7.1 Service unavailable; Client host [xxx.xxx.xxx.xxx] blocked\", or \"\u200e550 5.7.1 This email was rejected because it violates our security policy.\"<\/p>\n

Current status: We're continuing to evaluate the traffic patterns and are working with the third-party service to determine the correct course of action to remediate the impact.<\/p>\n

Scope of impact: This issue may affect any user's mail flow if the recipient is leveraging a specific third-party anti-spam service to filter email messages.<\/p>\n

Next update by: Tuesday, January 9, 2024, at 11:30 PM UTC<\/p>\n

Published Time: 05.01.2024 22:45:11<\/p>\n

Title: Some users may be unable to send or receive email messages and receive a Non-Delivery Report (NDR)<\/p>\n

User impact: Users may be unable to send or receive email messages and receive a NDR with a 550 or 554 error code.<\/p>\n

More info: This issue only occurs if either the sender or user who is receiving the message is utilizing a specific third-party anti-spam service. Senders receive the NDR which states that the message has been rejected due to a 550 or 554 error code and that their host IP address is listed on the third-party anti-spam service.<\/p>\n

The error messages state \"550 5.7.350 Remote server returned message detected as spam\", \"554 5.7.1 Service unavailable; Client host [xxx.xxx.xxx.xxx] blocked\", or \"\u200e550 5.7.1 This email was rejected because it violates our security policy.\"<\/p>\n

Current status: Our collaborative analysis with the third-party service has confirmed that some of the third-party's blocks were intentional; however, we're continuing to work with the provider to ensure legitimate mail is delivered as expected. We're also reviewing anti-spam changes that could be implemented on our side to further resolve the issue.<\/p>\n

Scope of impact: This issue may affect any user's mail flow if the recipient is leveraging a specific third-party anti-spam service to filter email messages.<\/p>\n

Next update by: Monday, January 8, 2024, at 11:00 PM UTC<\/p>\n

Published Time: 04.01.2024 23:59:20<\/p>\n

Title: Some users may be unable to send or receive email messages and receive a Non-Delivery Report (NDR)<\/p>\n

User impact: Users may be unable to send or receive email messages and receive a NDR with a 550 or 554 error code.<\/p>\n

More info: This issue only occurs if either the sender or user who is receiving the message is utilizing a specific third-party anti-spam service. Senders receive the NDR which states that the message has been rejected due to a 550 or 554 error code and that their host IP address is listed on the third-party anti-spam service.<\/p>\n

The error messages state \"550 5.7.350 Remote server returned message detected as spam\", \"554 5.7.1 Service unavailable; Client host [xxx.xxx.xxx.xxx] blocked\", or \"\u200e550 5.7.1 This email was rejected because it violates our security policy.\"<\/p>\n

Current status: We've received reports that some users may be unable to send or receive email messages due to a third-party anti-spam service listing our IP addresses within their service. We're working with the third-party anti-spam service to better understand why our IP addresses have been listed and what actions need to be taken to resolve this issue.<\/p>\n

Scope of impact: This issue may affect any user's mail flow if the recipient is leveraging a specific third-party anti-spam service to filter email messages.<\/p>\n

Next update by: Friday, January 5, 2024, at 11:00 PM UTC<\/p><\/blockquote>\n

War jemand von diesem Problem betroffen?<\/p>\n","protected":false},"excerpt":{"rendered":"

Bei Microsofts Exchange Online hat es vom 5. bis 11. Januar 2024 eine St\u00f6rung (EX703958) gegeben, bei dem der Dienst nicht mehr funktional war. Nutzer konnten keine E-Mails \u00fcber Exchange Online empfangen oder versenden.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2039,7862],"tags":[5359,987],"class_list":["post-290410","post","type-post","status-publish","format-standard","hentry","category-mail","category-stoerung","tag-exchange","tag-storung"],"_links":{"self":[{"href":"https:\/\/borncity.com\/blog\/wp-json\/wp\/v2\/posts\/290410","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/borncity.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/borncity.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/borncity.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/borncity.com\/blog\/wp-json\/wp\/v2\/comments?post=290410"}],"version-history":[{"count":0,"href":"https:\/\/borncity.com\/blog\/wp-json\/wp\/v2\/posts\/290410\/revisions"}],"wp:attachment":[{"href":"https:\/\/borncity.com\/blog\/wp-json\/wp\/v2\/media?parent=290410"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/borncity.com\/blog\/wp-json\/wp\/v2\/categories?post=290410"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/borncity.com\/blog\/wp-json\/wp\/v2\/tags?post=290410"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}