it-koehler-blog

it-koehler-blog

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In old fashoined exchange onpremises installations, lot of people face an issue exchange does not accept new mails, because of lack of ressources. So how to cleanup the drive where exchange is installed? Some days ago the good old technet gallery offered a small script to manage this task. But now the technet gallery (R.I.P) […]

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Getting things ready for cloud migration or anything different, lot’s of companies need to change their users UPNs. As consultant I had to do that several times, therefore I wrote some lines of PowerShell code, to manage this. It’s not that difficult, but for documentation my script also creates a CSV file with the UPNs […]

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Some days ago a teammate had to schedule a maintenance for two Exchange Server in DAG mode. I said there had been a great tool putting one of this servers in maintenance. Just googling some minutes, but did not find any project in github anymore. Remember the useful tool? After some time I found the […]

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Just one month ago HAFNIUM generated lot of trouble with patching and searching for vulnerability on Microsoft Exchange Servers. Now another critical security patch is available for exchange, so there are lots of exchange servers to hijack. See some information about april 2021 Updates Another useful link for updating your system: https://techcommunity.microsoft.com/t5/exchange-team-blog/released-april-2021-exchange-server-security-updates/ba-p/2254617 What can I […]

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