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Exchange Online Protection, which is included with O365, works quite well for me. If you need advanced functionality, you can pay the premium price of Advanced Threat Protection: <a href="https://docs.microsoft.com/en-us/office365/securitycompliance/office-365-atp" rel="ugc">https://docs.microsoft.com/en-us/office365/securitycompliance/office-365-atp</a><br />
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Do note that putting another anti-spam solution in front of O365 requires some additional configuration, and you will loose some of the built-in functionalities as explained here: <a href="https://blogs.msdn.microsoft.com/tzink/2016/06/07/hooking-up-additional-spam-filters-in-front-of-office-365/" rel="ugc nofollow">https://blogs.msdn.microsoft.com/tzink/2016/06/07/hooking-up-additional-spam-filters-in-front-of-office-365/</a>
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Exchange Online Protection, which is included with O365, works quite well for me. If you need advanced functionality, you can pay the premium price of Advanced Threat Protection: https://docs.microsoft.com/en-us/office365/securitycompliance/office-365-atp [https://docs.microsoft.com/en-us/office365/securitycompliance/office-365-atp]

Do note that putting another anti-spam solution in front of O365 requires some additional configuration, and you will loose some of the built-in functionalities as explained here: https://blogs.msdn.microsoft.com/tzink/2016/06/07/hooking-up-additional-spam-filters-in-front-of-office-365/ [https://blogs.msdn.microsoft.com/tzink/2016/06/07/hooking-up-additional-spam-filters-in-front-of-office-365/]

John Caspary

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I don't think a product to replace Spam Arrest exists. Thank you for the help though!!!
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I don't think a product to replace Spam Arrest exists. Thank you for the help though!!!

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My friend is using a service called <a href="https://www.spamarrest.com/" rel="ugc">SpamArrest</a> to manage his unruly inbox. Any new senders will receive an email back from the server asking they pass a &quot;capcha&quot; type non-robot test. After that, they're whitelisted and may email freely.<br />
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He's moved to Office 365 and SpamArrest isn't compatible. <br />
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The goal is a robust email whitelisting cloud service that will work with O365 Exchange and Outlook Desktop Client. Do you know of a product that can meet this need?<br />
<br />
Thank you,<br />
<br />
John
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My friend is using a service called SpamArrest (https://www.spamarrest.com/) to manage his unruly inbox. Any new senders will receive an email back from the server asking they pass a "capcha" type non-robot test. After that, they're whitelisted and may email freely.

He's moved to Office 365 and SpamArrest isn't compatible. 

The goal is a robust email whitelisting cloud service that will work with O365 Exchange and Outlook Desktop Client. Do you know of a product that can meet this need?

Thank you,

John

SpamArrest Email Spam Prevention Program for Office 365 Needed

Microsoft Office is an integrated suite of applications that includes Outlook, Word, Excel, Access, PowerPoint, Visio and InfoPath, along with a number of tools to assist in making the individual components work together. Coding within and between the projects is done in Visual Basic for Applications, known as VBA.

Microsoft Office

Office 365 is a group of software plus services subscriptions that provides productivity software and related services to its subscribers. Office 365 allows the use of Microsoft Office apps on Windows and OS X, provides storage space on Microsoft's cloud storage service OneDrive, and grants 60 Skype minutes per month. Office 365 includes e-mail and social networking services through hosted versions of Exchange Server, Skype for Business Server, SharePoint and Office Online, integration with Yammer, as well as access to the Office software. All of Office 365's components can be managed and configured through an online portal; users can be added manually, imported from a CSV file, or Office 365 can be set up for single sign-on with a local Active Directory using Active Directory Federation Services.

Microsoft 365

Various techniques are used to prevent email spam (unsolicited bulk email). No technique is a complete solution to the spam problem, and each has trade-offs between incorrectly rejecting legitimate email (false positives) vs. not rejecting all spam (false negatives) - and the associated costs in time and effort. Anti-spam techniques can be broken into four broad categories: those that require actions by individuals, those that can be automated by email administrators, those that can be automated by email senders and those employed by researchers and law enforcement officials.