So I was contacted by a panicking client. It seemed that all of his Outlook clients could not connect to Office 365 anymore. That meant investigating what was wrong. Upon inquiring he admitted that he changed some DNS settings the day before. But only the SPF record. That didn’t explain connection issues with their Outlook … Continue reading "Help the Outlooks are down"
When I was at a client the other day I encountered the following: As you can see the Exchange environment in itself already contains a single point of failure. Namely the Exchange-01 server who solemnly functions as a client access and transport hub. The two database servers however are both made high available through the … Continue reading "How not to create redundancy in your Exchange"