Forum Discussion
cedric_menzi
Jun 29, 2021Copper Contributor
Malware Filter Rules
Hey guys, I've got a Problem: I've created multiple Malware Filter Rules which all have Extension Filter activated. But now only the rule with Priority 0 blocks extensions like ".docm". Is this n...
- Jun 30, 2021Oh, that's on me, I though you're talking about mail flow rules... Lost in translation again 🙂
When it comes to Malware filter policies, processing is always stopped once the first matching policy is triggered, as detailed here: https://docs.microsoft.com/en-us/microsoft-365/security/office-365-security/configure-anti-malware-policies?view=o365-worldwide#set-the-priority-of-custom-anti-malware-policies
So if you have multiple policies, you need to scope them to cover different users/groups/domains, otherwise any "lower" priority policy will be ignored.
cedric_menzi
Jun 29, 2021Copper Contributor
Thanks for your tip, but I can't find the option to stop other rules from being processed... Where can I find it? I know where to find it for anti-spam rules but not for malwarefilter rules.
VasilMichev
Jun 30, 2021MVP
Oh, that's on me, I though you're talking about mail flow rules... Lost in translation again 🙂
When it comes to Malware filter policies, processing is always stopped once the first matching policy is triggered, as detailed here: https://docs.microsoft.com/en-us/microsoft-365/security/office-365-security/configure-anti-malware-policies?view=o365-worldwide#set-the-priority-of-custom-anti-malware-policies
So if you have multiple policies, you need to scope them to cover different users/groups/domains, otherwise any "lower" priority policy will be ignored.
When it comes to Malware filter policies, processing is always stopped once the first matching policy is triggered, as detailed here: https://docs.microsoft.com/en-us/microsoft-365/security/office-365-security/configure-anti-malware-policies?view=o365-worldwide#set-the-priority-of-custom-anti-malware-policies
So if you have multiple policies, you need to scope them to cover different users/groups/domains, otherwise any "lower" priority policy will be ignored.
- cedric_menziJun 30, 2021Copper Contributor
- Stuart HargreavesJul 27, 2021Copper Contributor
Have you considered http://www.spambrella.com as a bolt on? (I work for Spambrella) Far easier to administer and uses enterprise services stacked on the backend for optimum performance. 85% of the Spambrella customer base are O365/Azure users.