To find a UMUser who has a extensioni “xxxx” using powershell
get-ummailbox | where { $_.Extensions -eq “xxxx” }
and
get-ummailbox | ForEach { If($_.Extensions -eq xxxx){$.DisplayName}}
To find a UMUser who has a extensioni “xxxx” using powershell
EMC and use a filter for email addresses using either contain or starts with method. Then in the filter use EUM:xxxx