Microsoft Exchange and Active Directory Blog
The following case is certainly not an everyday occurrence: The aim was to monitor an Active Directory group for certain members. Only very specific user accounts should be present in this group, all additional or remote members should be reported. I quickly created a small PowerShell script in which the users were specified. Read more
Sophos has recently released the update to version 9.5 for the UTM. One of the new features of UTM 9.5 is the ability to set the TLS version for the web application firewall. However, this is still not enough to achieve an A+ rating in the SSL Server Test by Qualys SSL Labs. Although an A rating is not necessarily ... Read more
Sophos UTM version 9.5 has been available since yesterday morning. All those who, like me, have not yet been offered the update via Up2Date can download it here (301 MB): http://ftp.astaro.de/UTM/v9/up2date/ The update can then be uploaded manually via the GUI and thus the UTM can be updated: Since there have been problems in the past with ... Read more
In the comments to the article "Exchange 2016: Install Cumulative Updates (CU)" it was pointed out to me that with Veeam Backup & Replication 9.5 U1 and Exchange 2016 CU5 there are problems with the single item restore. The databases can be backed up and restored normally, but the Veeam Explorer for Exchange no longer works with Exchange 2016 ... Read more
Sophos already released an update for Sophos UTM on 27.04.17, which fixes certificate warnings in connection with Chrome 58 and activated HTTPS scanning. I have not yet been offered the update via Up2Date, so here is a small note. The update to version 9.413-4 can be downloaded here and installed manually: http://ftp.astaro.de/UTM/v9/up2date/ The update addresses ... Read more
With the Performance Tuning Guidelines for Windows Server 2016, numerous tips for optimizing speed have been published: Performance Tuning Guidelines for Windows Server 2016 Currently, tips for increasing speed are offered for the following points: Server Hardware Hardware performance considerations Hardware power considerations Server Roles Active Directory Servers File Servers Hyper-V Servers Remote ... Read more
Sometimes you can't see the wood for the trees, in this case the following problem has led me onto the slippery slope. A user reports that although he can create items in a shared calendar of a colleague, he can no longer delete the entries. When trying to delete a calendar entry, Outlook only shows the following error message: The ... Read more
Admittedly, the announcement is a little late, but we would still like to cordially invite all interested parties to the third meeting of the Exchange User Group OWL (EUGO) on 12.05.2017. The venue "Allegro Habichtshöhe" in Bielefeld will remain the same, but Andi has put a lot of effort into a new website especially for the EUGO. Registrations no longer need to be made on a ... Read more
During the migration from Exchange 2013 to Exchange 2016, the following error (version mismatch) may occur when moving user mailboxes from Exchange 2013 to Exchange 2016: A version mismatch was detected (Actual:6, Expected:5) The following message can then be seen in the Exchange 2013 server log: 2017-04-23T20:37:21.432Z,6,Default,Error,",", "RegisterMigrationBatch failed, exception at Microsoft.Exchange.Migration.MigrationServiceHelper.SafeInvokeImplMethod(Action method, MigrationServiceRpcMethodCode methodCode) at Microsoft.Exchange.Migration.MigrationNotificationRpcSkeleton.RegisterMigrationBatch(IMigrationNotification ... Read more
Windows Defender is integrated into Windows Server 2016 and is also activated by default. This can lead to problems if another managed virus scanner is installed. As most companies probably use a virus scanner from a third-party manufacturer (Symantec, Kaspersky, TrendMicro, Intel Security, etc.), it makes sense to uninstall Windows Defender. The uninstallation ... Read more
