Email, Spam Control, Still receiving email from someone on Block List

I put someone on my Personal Block List, but I'm still receiving email from them.

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.

For example, the email message might be listed as being sent from but the X-Spam-OrigSender will list the email address as "". So if "" 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.

Keywords:emails, spam control, receive, blocked, blocking, sender, orig   Doc ID:48993
Owner:Email Relays E.Group:University of Illinois Technology Services
Created:2015-03-18 10:21 CDTUpdated:2017-02-28 17:50 CDT
Sites:University of Illinois Technology Services
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