One of the most interesting security options in Exchange 2019 is the Client Access Rules feature. It allows the administrator to define rules to block or limit access to EAC (former ECP) and to EMS (Exchange Management Shell). This functionality was not present in previous versions of Exchange and now it is a security milestone for […]
11th April 2017 by Johan Delimon Leave a Comment This article guides you through the correct steps for configuring Kerberos Authentication In order to have a more scalable Skype for Business deployment it is advised to enable Kerberos Authentication on Skype for Business. Configuring Kerberos Authentication in Skype for Business is described on TechNet over […]
Today, on a DAG maintenance of an Exchange 2016, I ran into the problem that after executing the script StopDagServerMaintenance.ps1 a warning was displayed. Call-ClusterExe: cluster.exe did not succeed, but 5058 was not a retry-able error code. Not attempting any other servers. This may be an expected error by the caller. After a little troubleshooting […]
I have deployed two Lync 2013 standard edition servers in a paired mode. Half of the Lync users are hosted in first standard edition pool called Lync01.green.com (pool1) and rest of them are hosted in second standard edition pool called Lync02.green.com (poo2). I am trying to understand the DNS SRV records requirements and client behaviors. […]
We are on a journey installing various Lync Server 2013 roles. In today’s step by step, we will setup our 2nd Lync Server Standard Edition pool and then set it up as a Backup Registrar so automatic failover can happen. We will also look at Lync Server 2013’s new failover capabilities that allow full client […]
Lync Server 2013 and Skype for Business Server 2015 provides pool pairing option to configure disaster recovery. Pool pairing option can be configured between two different Lync/Skype4B sites. In paired pool configuration, you can have both sites active but make sure maximum number of users should be based on single pool so that at the […]
Invoke-CsManagementServerFailover cmdlet is used to execute Central Management Server failover. While running the failover process of central management server, you can perceive the error “Invoke-CsManagementServerFailover failed”. Reason of this error could be one of the following: First of all make sure, you have run the “Setup or Remove Skype for Business Server Components after publishing […]
ync 2013 Topology with High Availability (POOLs, DNS LB vs HLB) © 2014 – Thomas Pött, MVP Lync (modified 2015.08.18) Download PDF: here The most misunderstood topic in Lync is the high availability. This is regardless of server count, positioning or DNS versus hardware load balancing. Note: This document is neither a sizing […]