Shadow Copies in Windows 10 and 11
Set up automatic shadow copies on Windows 10 and 11 ... Read More
Do you want to automate distribution group creation, making your job easier? With this script you'll be able to mass-create distribution groups. It takes a simple text file as an input that contains a list of delivery group names, and ... Read More
Office365 is increasingly popular among businesses as a managed email service with a plethora of features and competitive pricing. The best and most efficient way to administer your Exchange Online tenant is via Exchange PowerShell. It comes with no surprise ... Read More
In certain scenarios we might need to forward a full VLAN trunk to a VM. In this article we go through a process of virtualizing a switch in ProxMox to achieve this easily. Before You Begin We assume the trunk ... Read More
Have you ever wondered while typing the same long PowerShell command again and again, that there must be an abbreviation for at least a few of them? Here you go! ... Read More
Every day we need to log into hundreds of portals, as it is important for security, there must be a way to script it, automate logins without putting our actual passwords in scripts in plain text, right? Luckily this is ... Read More
In our previous article we discussed enforced TLS with Exchange. More precisely with on-premises Exchange servers. We established that Exchange uses opportunistic TLS, meaning it prefers encryption but it is not enforced if the other party only supports plain SMTP ... Read More
Most of the time administrators manage distribution group memberships. But it is absolutely possible for selected users to add/remove group members as needed, using simply their Outlook client. Before You Begin - Enabling MyDistributionGroupManagement
In our example a user called ... Read More
In our example a user called ... Read More
This guide is for on-premises Exchange deployments. If you are interested in enforced TLS on Office365 tenants, please click HERE Opportunistic Exchange - like most modern email systems - has the facility to transfer email messages encrypted. It is to ... Read More
UNIX type systems use the octal file permission model, that is limited in terms of setting access permissions for specific users and groups. By default there are only three attributes to be set on files and directories: for the owner, ... Read More
Exchange - like most of the other email systems - limits the maximum size of incoming and outgoing messages. There are three layers where these limits can be set: system-wide, on the send- and receive connectors and on individual mailboxes ... Read More
Huge Logs Sometimes the Exchange server runs out of space. As it happens often, the transaction log files use up all the free space, causing the transport service to stop as there is no more room to write messages to ... Read More
Quick Cleanup List When disk is almost full there here is a quick list I usually go through to recover some free space:
- Delete files from c:\windows\temp
- Download and run TreeSize to see what uses up ... Read More
Custom commands John needs to access Exchange PowerShell a lot. He's tired of logging in the actual Exchange server all the time, he prefers to use his local computer to run cmdlets and manage mailboxes. He created a script, called ... Read More
Installation In Exchange Online DKIM is a built-in service, but on an on-prem Exchange 2019 deployment we need a 3rd party application to add this functionality to our Exchange infrastructure. In this guide we use Stefan Profanter's excellent dkim-exchange application ... Read More
Spam messages have become a huge issue. They are both annoying, flooding our mailboxes with unneeded content and they are a security risk too, as many of them contain links to malicious websites or even viruses. To fight spamming SPF, ... Read More
You have a new Exchange installation. You've just clicked on the Setup Finished window, lean back in your chair and sip on your steamy coffee, saying to yourself: great, now I have a mail server, I could start setting up ... Read More
Our local diner, AlwaysHot Café hired us to build a mail server. They have a small network that consists of a switch and a firewall with a single static public IP. After discussing our options we decided to go with ... Read More
We established in part1 why the key exchange takes place, if you missed that part click HERE to check it out. Basically the client and the server agree on a key that they can use to encrypt the rest of ... Read More
Math in PowerShell is very simple and straightforward, the basic operators work as they usually do in any programming or scripting language: 1 + 1, 64 - 16, 4 * 32, 1024 / 128, etc. However, many times I faced ... Read More
The task for today is to join a Microsoft Active Directory domain with our CentOS box. We use the sssd package to accomplish this, first we start with a basic CentOS installation, we go through the initial setup, then the ... Read More
