Well, good bye to 2020. That was some year to put it mildly…
Again, we see that on-premises content has been reduced and the overall focus is Office 365 and Hybrid. AD FS certificates keep on expiring and so do WAP, thus those articles remain popular as ever.
Exchange 2019 CU8 has been released to the Microsoft Volume Licensing Center! Exchange 2019 has a different servicing strategy than Exchange 2007/2010 and utilises Cumulative Updates (CUs) rather than the Rollup Updates (RU/UR) which were used previously. CUs are a complete installation of Exchange 2019 and can be used to install a fresh server or to update a previously installed one. Exchange… Read the rest “Exchange 2019 CU8 Released”
Exchange 2016 CU19 has been released to the Microsoft download centre! Exchange 2016 has a different servicing strategy than Exchange 2007/2010 and utilises Cumulative Updates (CUs) rather than the Rollup Updates (RU/UR) which were used previously. CUs are a complete installation of Exchange 2016 and can be used to install a fresh server or to update a previously installed one. Exchange 2013 h… Read the rest “Exchange 2016 CU19 Released”
Today is patch Tuesday for December 2020 and contains a security advisory bulletin for Exchange 2010. Due to the way that Exchange 2010 is serviced, security updates are released as a new update rollup (RU).
You can visit the Microsoft Security Response Center to read the details about this and the other released security updates.
This is build 14.03.0509.000 of Exchange 2010, and KB 4593467 has the… Read the rest “Exchange 2010 SP3 RU31 Released”
Please be aware that Exchange 2013, Exchange 2016 and Exchange 2019 security updates were released as part of the December 2020 patch Tuesday release. The overall rating is critical, and the update resolves multiple issues.
Details for these, and previously released updates can be found in the Security Update Guide. Also note that Exchange 2010 SP3 RU31 was also released.
For all of th… Read the rest “Exchange December 2020 Security Updates”
After going through the steps to disable TLS 1.0 and TLS 1.1, it was noted that Managed Availability was not happy with one particular component in Exchange 2013. This was the OnPremisesSmtpClientSubmission probe and the monitor which was associated to it. The below is a reproduction of the customer environment.
For reference, you can review Protocols in TLS/SSL (Schannel SSP) for a listing of wh… Read the rest “Exchange 2013 OnPremisesSmtpClientSubmission – Unhealthy After Disabling TLS 1.0 and TLS 1.1”
In most enterprise customers there is a segregation of duties between multiple teams. This could be networking and desktop. Or Windows Server platform and messaging. It was the split in these roles, and especially a dearth of communication which led to this tale of woe with TLS 1.2 and Exchange.
The reasons for moving to TLS 1.2 and avoiding SSL2, SSL3, TLS 1.0 and TLS 1.1 should be well underst… Read the rest “Exchange Managed Availability Broken With TLS 1.2 Changes”