Anyone from ProofPoint / CloudMark / CloudFilter ?


Thanks!
Scott

On Thursday, 14/08/2025 at 22:35 Scott Q. via mailop wrote:



 
One of our users is getting this bounce when trying to e-mail shaw.ca:


Remote host said: 554 shw-ibgw-4001a.ext.cloudfilter.net cmsmtp 
x.x.x.x blocked AUP#BL​

It's my understanding that cloudfilter.net is part of Cloud Mark from
ProofPoint, yet when I check our IP at:
https://csi.cloudmark.com/en/reset/ 
it's not listed.

Is it a different list, or that message doesn't mean it's a block list
?

Thanks!
Scott​

​
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