On 27 December 2017 Microsoft announced that the support for EAI in email has been implemented. This means that the Microsoft cloud now supports EAI email addresses in outlook, email flow, connectors and rules. For now there won’t be any support for adding IDN domains to the platform itself. With this new functionality in Office 365 a new door opens…
Today I am releasing the DMARC monitoring tool to the community. It has been in development over the pas few weeks and is now ready to be used. This Report tool will give you detailed insight into domains that are trying to spoof your owned domains, subdomains or even non existing brand names. As this can cause damage to your…
Many customers I visit ask me: Do you know a good tool to generate DMARC reports? And the answer is always the same: Sorry I don’t know a end to end report generation tool that will meet your needs. There are some paid services where you can outsource this but they are pretty expensive and you lose control of the…
Today i release a update on the script function “get-dc”. Sinds the first release I have received some feature requests and i have improved the codes error handling. The full list of changes: V1: Fixed a issue with the credentials when querying from a domain joined PC. V1.1: Updated “Site” param to “ADsite” and try to resolve default AD site…
A lot of times when I visit customers I notice that they struggle with the concept of managing Exchange. Although they have extensive RBAC in place, they are still unable to understand who is doing what. They rely on their change procedures to know who is changing what in their environment. We all know how good we are as administrator…
When I am in the field and I talk to email administrators most of them know what SPF is, but when we are talking about DKIM ( Domain Keys Identified Mail ) it seems that only the bigger company’s have implemented this protocol. Most of the time it was not the companies choice to implement DKIM but it came from a requirement enforced by a…
Every once in a while you will find customers running in to the following issue. When they try to get mailbox folder permissions or set mailbox folder permissions a red error message pops up stating: The security principal specified is already on the permission set. + CategoryInfo : NotSpecified: (:) [Get-MailboxFolderPermission], CorruptDataException + FullyQualifiedErrorId : [Server=SU8000006141,RequestId=628b5335-6148-4297-8f06-4c607b029737,TimeStamp=15-2-2017 06:46:24] [FailureCategory=Cmdlet-CorruptDataException] BE7556A,Microsoft.Exchange.Management.StoreTasks.GetMailboxFolderPermission + PSComputerName …
Do you know that feeling when you have delivered a good working script and a few weeks later someone comes up to you saying “It ain`t working”. Or that time that someone else of your team changed some code over night and some parts of your nice working tool ain’t working anymore. For these reason I have developed 2 functions…
Antispam counter measures explained Part 1: How the Sender Policy Framework really works Antispam counter measures explained Part 2: Advanced SPF records, Best practice and biggest mistakes Antispam counter measures explained Part 3: How DKIM really works and best practice In Part 1 I explained the basics of SPF and how you can implement the most common scenario`s. After the…
Antispam counter measures explained Part 1: How the Sender Policy Framework really works Antispam counter measures explained Part 2: Advanced SPF records, Best practice and biggest mistakes Antispam counter measures explained Part 3: How DKIM really works and best practice In this first part of “Antispam counter measures explained ” I will start with a detailed explanation of how…