Mark E-Mails external with Exchange Online External Sender Identification

by A.K.commonPosted on No Comments

For some time now, Exchange Online has offered the option of making external emails visible directly in Outlook as well as OWA and Outlook Mobile. This function is called quite unspectacularly “ExternalInOutlook”. In action the function looks like this: I have already published an article on the topic of email banners with Exchange Transport Rules …

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Exchange Online send mails with E-Mail alias

by A.K.common, Microsoft Exchange Server, Microsoft Office 365, PowershellPosted on No Comments

Long time, there was no way to change the send mail address from primary to alias mail addresses. So sending address was forced by administration. Even if users have multiple smtp-addresses there was no official way to accomplish this. January 2022 changed this statement, now it is possible to use the secondary mail address. More …

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Exchange OnPremises Hybrid Support Roadmap

by A.K.Microsoft Exchange ServerPosted on No Comments

Some days ago Microsoft a new roadmap for supported Exchange szenarios in hybrid environment considering mailflow traffic. There are some news about the so called Throttling dates (when Exchange Online begins to reject some messages from older Exchange OnPrem versions). See the original post and the roadmap here.This behavior is communicated already in March 2023 …

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Incoming mails as attached file if the mail is signed

by A.K.common, Microsoft Exchange ServerPosted on One Comment

Some time ago I configured an external E-Mail banner which works like a charm. After setting up there was one issue with incoming, signed mails, because these were “attached” as file to an mail with the new email banner. If you like to setup the email banner see this blogpost. To create a workaround (not …

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Append E-Mail banner for external mails in Exchange Online E-Mail Tagging

by A.K.common, Microsoft Exchange Server, Microsoft Office 365Posted on 2 Comments

Lot’s of cyber attacks are based in malicious e-mails and use the good faith of users. That’s why you should train and sensitize your users. A simple and effective way is to visualize the danger with a small banner. In this article you get the information to create a rule with an “caution” banner. In …

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