In environments with internal PKI and Exchange Online, publishing S/MIME certificates centrally can save a lot of manual work. This PowerShell script exports public user S/MIME certificates from Active Directory, stores them as .cer files, and then writes them to Exchange Online mailbox attributes so they are available through the Global Address List (GAL). S/MIME in Exchange … Weiterlesen
When troubleshooting S/MIME in Exchange Online with Microsoft support, one of the key questions was: Is our internal CA certificate chain really stored correctly in the tenant? Exchange Online does not only rely on public online CAs; it maintains its own virtual certificate collection for S/MIME trust, which Outlook Mobile then uses to validate user certificates. To … Weiterlesen
During a spam wave, it may be necessary to delete certain emails directly from users‘ mailboxes. This requires coordination with the Data Protection Officer (DPO) because it involves direct intervention in the mailboxes. This commands must be used with extreme caution, as incorrect parameters can empty entire mailboxes! The cmdlet Search-Mailbox is used here, which … Weiterlesen