Exchange 2019

IntroductionThis document describes why you see "XXXXXXXA" in mailserver communication and TLS failures associated with the Cisco Email Security Appliance (ESA).Why do you see XXXXXXXA after EHLO and "500 #5.5.1 command…

Last ModifiedSep 23, 2017Products (1)Cisco ASA 5500-X Series FirewallsKnown Affected Releases7.2(1.25) 7.2(2)Description (partial)Symptom: The SMTP inspection make checks of the header Content-Type and…

I have recently been working with a customer to upgrade to Exchange Server 2016, one of the requirements is to enable TLS 1.2. The following will guide you through the preparation, implementation and then testing.For the testing I…

OverviewIn part 3 of our Exchange Server TLS Guidance series, we introduce how to turn off TLS 1.0 and 1.1 in your Exchange Server deployment. Turning off TLS 1.0 and 1.1 can be a highly disruptive event if not planned and executed…

OverviewIn part 2 of our Exchange Server TLS Guidance series we focus on enabling and confirming TLS 1.2 can be used by your Exchange Servers for incoming and outgoing connections, as well as identifying any incoming connection which…