Have an on prem exchange server 2013 that weems to work and is very slow but when you go to mailboxes none appear. There are many there and they all work but cannot see them in the ecp console under ...

EX2013 - this is running in hybrid mode. I do not have any mailboxes on-prem. Everything was migrated to Exchange Online years ago. I don't have any SMTP relays either. Exchange 2013 went EOL last ...

Microsoft Exchange admins got a bit of a rude surprise as the new year rang in, with a “latent date issue” striking the on-premises versions of Exchange Server 2016 and 2019 that saw emails queued up ...

Microsoft has shared mitigations for two new Microsoft Exchange zero-day vulnerabilities tracked as CVE-2022-41040 and CVE-2022-41082, but researchers warn that the mitigation for on-premise servers ...

A new PowerShell-based malware dubbed PowerExchange was used in attacks linked to APT34 Iranian state hackers to backdoor on-premise Microsoft Exchange servers. After infiltrating the mail server via ...