EUDORA SPAM FILTER
Sender Has Numerical User Name
 

I don't currently use this filter, but present it here to show how to do it.

This filter will find any message that has 5 or more numbers in a row anywhere in the user name (before the "@" symbol). The chances that such a username is spam are quite good. Manufacturing fake and disposable user names with lots of numbers in them is a favorite technique of spammers,

 

 

Match:	Incoming and Manual
Header	From:
Verb:	regexp (case insensitive)
Value:	[0-9]{5}.*@
Actions:	Transfer To Spam.mbx
	Make Label 3
	Skip Rest

Note* This:   
"[0-9][0-9][0-9][0-9][0-9]"
is exactly the same thing as:
"[0-9]{5}"

Here's an sample From: header of a spam caught by this filter:

"From: "Trial Pharmacy" <Bodensteine220977@yahoo.com>"