Email, Spam Control, Still receiving email from someone on Block List
The address from which an email message appears to come is often not the actual sender. If you look at the full headers of the email message (see solution Email, Exchange, How do I view mail headers? ), you should find the actual email address of the sender listed in the X-Spam-OrigSender field. This is the true email address that the message was sent from.
I put someone on my Personal Block List, but I'm still receiving email from them.
For example, the email message might be listed as being sent from email@example.com but the X-Spam-OrigSender will list the email address as "firstname.lastname@example.org". So if "email@example.com" was on the Block List, the email would still come through because it was actually from the second address.
Spammers change the true address on every message to circumvent block lists. However, the software that runs Spam Control is updated daily to fine-tune the types of spam that are caught. Sometimes a certain spam will get through the filter but within a day or two Spam Control will be blocking it.