Antispam Blocked List - finding why EMails have been blocked.

What regular annoyance is that antispam incorrectly blocks some mail, often from myself (via mailing lists) or regular senders. 

It can be difficult to find why something has been blocked, it would be useful if there was some way of bringing up an explanation.

When I go to check the Blocked List, there is no way of searching it.  You have to scroll down through a long list looking for a reason an address might have been blocked.  Things like Firefox let you search Cookies which it makes it easier to find ones that you want to delete.

Should adding an EMail address or domain to the Allowed List override the Blocked List?