Exchange UM Toll Fraud Risk, Don’t Weaken Your PIN Settings

Exchange Unified Messaging is the voicemail platform common to most Lync/Skype for Business installs but also supports PBX systems. We’ve recently seen a new toll fraud attack targeting Exchange UM’s to relay calls and either bypass call charges or run up charges on premium rate numbers. The attack relies on guessing or otherwise compromising users […]

Exchucutil.ps1 Error “The UM server wasn’t able to read the Communications Server pool objects”

I hit this error the other day updating Exchange 2010 Unified Messaging settings when adding a second Lync 2010 Enterprise Pool. I couldn’t work it out because both Lync and Exchange UM were already deployed and working, and my permissions were lined up. [PS] C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Microsoft Exchange Server 2010>& “C:\Program Files\Microsoft\Exchange Server\V14\Scripts\ExchUCUtil.ps1” The UM server […]