Microsoft Exchange and Active Directory Blog
From time to time I receive emails or inquiries about environments in which Outlook frequently or even permanently asks for login information. Some users and administrators even seem to have come to believe that Outlook's constant requests for user names and passwords are normal. The good news is that the permanent request for user and ... Read more
Unfortunately, the Microsoft Technical Summit, as it took place last year in Darmstadt, no longer exists. Instead, there will be the Microsoft Tech Summit in Frankfurt at the beginning of 2018: The Microsoft Tech Summit is a 2-day event and participation is free of charge. However, the Tech Summit cannot be compared with the Technical Summit. The Tech ... Read more
The concept of "Server Component States" was introduced with Exchange 2013. The Server Component States provide detailed control over the status of the components that make up an Exchange Server. With Exchange 2016, there is only one installable role (mailbox, edge transport not included). However, the mailbox role consists of various components. ... Read more
Recently, I have been confronted with problems and opinions on the subject of backup and Exchange Server. This is certainly a topic that can be argued about, so I have collected a few statements on the subject of backup: We don't need a backup, we use a DAG We don't need a backup, we have ... Read more
I am not entirely sure whether the following problem also occurs in environments in which standard Windows DNS servers are used. Companies that do not run their DNS infrastructure on Microsoft DNS servers might be interested in the following article. The following behavior of Windows 10 computers could be reproduced on a "non Windows DNS" server: ... Read more
As Microsoft has recently made frequent changes to the semi-annual feature updates (function updates), it is not easy to keep track of everything. I would therefore like to clarify a few points in this article: 1. explanation of terms/general information Microsoft has renamed the update channels. Previously there was "Current Branch (CB)" and "Current Branch for Business (CBB)". This became ... Read more
I have already described the problem in another article: Users receive an undeliverability report (NDR) when trying to send to mailboxes or distribution lists. The field code in the NDR is "550 5.1.1 RESOLVER.ADR.ExRecipNotFound; not found'. Here is an example of such an NDR: The problem occurs, for example, when a distribution list is migrated to a shared mailbox ... Read more
In the previous article, I had already shown how to create new virtual directories for OWA, for example. However, the Exchange Management Shell was always used to recreate them. But what happens if the Exchange Management Shell no longer starts? If the virtual directories have to be recreated and the Exchange Management Shell no longer starts, what ... Read more
Sophos has today released another update for Sophos UTM to fix the WAP2 vulnerability (KRACK): [NUTM-8984]: [RED] WPA2 KRACK vulnerability fixes for RED15w [NUTM-8789]: [Wireless] WPA2 KRACK vulnerability fixes The update has the version number 9.505-4 and can be downloaded and installed directly from the following link: u2d-sys-9.504001-505004.tgz.gpg Since there have been ... Read more
Sophos has released an update for the Shophos UTM. The update fixes the following issues: [NUTM-8851]: [Basesystem] System doesn't boot if Posgtresql database cannot start [NUTM-7240]: [RED] RED 50 loosing ARP entries of internal machines [NUTM-8782]: [RED] RED10, RED15, RED50: Update OpenSSL and TCPdump to most current Version [NUTM-8858]: [RED] DNSMasq vulnerabilities If the update ... Read more
