I work at a University where multiple departments use CiviCRM. For some reason, on one particular department, when I click on their emails that they send from CiviCRM, I get the following error:

Sorry, due to an error, we are unable to fulfill your request at the moment. You may want to contact your administrator or service provider with more details about what action you were performing when this occurred. There is a validation error with your HTML input. Your activity is a bit suspicious, hence aborting

It is so strange. It does not happen to me when I open the links from the email in incognito, not sure what could be happening. It is also only happening to me and some of my co-workers that also use our deployment of civicrm.


1 Answer 1


Two things: Admins won't see this message because it's coming from IDS (Intrusion Detection System) which is bypassed by default for admins. Then the second thing is I've seen this for email activities where there's a long thread of conversation in the email body and all the nesting confuses IDS.

  • I don't have an account (nor admin account) for their deployment, which is why it is still strange.
    – themak
    Commented Nov 4, 2021 at 4:24

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