Forum Discussion
EOP how to import / manage a large blacklist
Hi everyone, We have recently switched to EOP and are now struggling with the amount of spam and potentially dangerous files that are still getting through. We have set EOP to send spam through to...
You are correct about the hard limits of the safe and blocked sender lists
https://docs.microsoft.com/en-us/office365/securitycompliance/safe-sender-and-blocked-sender-lists-faq
If they are that large and absolutely must be blocked then I would consider a third party AV/AS which does not have these hard limits. There are several well known ones which work with Office 365
Hope that answers your question
Best, Chris
https://docs.microsoft.com/en-us/office365/securitycompliance/safe-sender-and-blocked-sender-lists-faq
If they are that large and absolutely must be blocked then I would consider a third party AV/AS which does not have these hard limits. There are several well known ones which work with Office 365
Hope that answers your question
Best, Chris
- Hi Christopher,
Thanks for taking the time to respond!
Unfortunately using a third party AS is not possible for us at the moment (As we only switched recently).
If there is no other way I will have to add the Mailflow Rules. But I will see maybe somebody has had the same problem and found a simpler way.
Best regards,
Anna- Thanks for letting me know. In that case it is going to be multiple mail flow rules in order to get around the limit.
There is a uservoice here in order to raise the limit
https://office365.uservoice.com/forums/289138-office-365-security-compliance/suggestions/33529975-spam-filter-allowed-and-blocked-sender-limit
Would recommend to vote on this and push it up the agenda.
In terms of the dangerous files you mention may want to look at Advanced Threat Protection to add to EOP which protects against malicious attachments and URL’s
Hope that answers your question.
Best, Chris
