Microsoft Exchange and Active Directory Blog
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
Although the virtual directories for the various Exchange web services can be recreated via the "Exchange Admin Center", there are cases where this function reaches its limits. I have simulated such an error for this article. Even after resetting the directory for OWA with the Exchange Admin Center, OWA does not work: Not everything ... Read more
Exchange 2016 databases can also be restored from a backup to other Exchange 2016 servers. The database therefore does not necessarily have to be restored to the server on which it was backed up or was active. It does not matter whether the server was a member of a DAG. However, it is important that both Exchange servers have the same version of the ... Read more
The following behavior is currently occurring more frequently with Outlook 2016 and Exchange Server 2016 CU7. Outlook asks for the login information after opening attachments or the password prompt appears. I was able to reproduce this behavior in my environment with Outlook 2016 (Version 1708 Build 8431.2079) and Exchange 2016 CU7. As soon as the attachment of an email in ... Read more
Microsoft Ignite 2017 in Orlando is over and some sessions have already been put online as videos. I have collected the links to presentations related to Exchange Server here: Thrive as an enterprise organization in Microsoft Exchange Online Running Exchange hybrid over the long term Scott Schnoll's Exchange tips and ... Read more
A new Exchange Server version was already announced at Ignite in Orlando, but Office will also be available in a new version in 2018. In most cases, Office will even be released a little earlier than Exchange 2019. This means that a few major migration projects are likely to start next year. Today, at Microsoft Ignite in Orlando, we announced Office 2019-the next perpetual ... Read more
Microsoft announced Exchange Server 2019 at Ignite in Orlando. The first preview is due to be published in mid-2018. The release is planned for the second half of the year. However, the new functions that will be available have not yet been officially announced. So we will probably have to be patient a little longer. One positive aspect is that ... Read more
