August 26, 2024 at 12:54PM Microsoft is investigating a false positive issue in Exchange Online, where emails with images are wrongly tagged as malicious and quarantined. The ongoing service degradation issue seems widespread, affecting outbound traffic, replies, and forwards of external emails. This is reminiscent of a past issue in October 2023. Microsoft is actively … Read more
July 17, 2024 at 03:09PM Microsoft is introducing inbound SMTP DANE with DNSSEC for Exchange Online in public preview to enhance email security. This includes utilizing TLS Authentication (TLSA) DNS record for verifying mail server identity and using DNSSEC for cryptographically verifying DNS records. The rollout, scheduled until 2025, aims to protect email domains from … Read more
April 15, 2024 at 03:17PM Microsoft is combating spam by implementing a daily Exchange Online bulk email limit of 2,000 external recipients from January 2025. This aims to prevent resource abuse and unfair usage. The limit will be phased in and existing tenants may need to switch to Azure Communication Services for Email. Google has … Read more
October 18, 2023 at 04:13AM Microsoft resolved an issue where admins were receiving an excessive number of blind carbon copies (BCC) of outbound emails flagged as spam. The problem caused legitimate emails sent to external addresses to be marked as spam. Microsoft disabled the rule causing the problem and confirmed that it has been resolved. … Read more