


Exchange 2013 Hotfix KB5000871 HAFNIUM

Cannot start TLS: handshake failure in postfix

Upgrade Postfix from v2 to v3

Email Security, Office 365, SMTP
Enable smtp_tls_connection_reuse in Postfix

MS Exchange, Powershell, Scripting
Copy Exchange Logs and Parse

Planning to Disable Directory Sync – Azure AD Connect

S Mime Cert for a shared mailbox from Digicert

MS Exchange, Powershell, Scripting
Remove/Add Multiple IPs to/from a Receive Connector’s Remote IP Range
