mhildebr wrote:
> Is there a way to have Spamassassin look for spoofed email addresses being
> used as the sender's address ( but using a different
> user name (Viagra instead of myname)? It seems like it would be simple to
> check the user name and filter results from that. Thanks for any help.

if you have the list of all valid display names, then you can write
rules for that. something like

header __FROM_MARK From =~ //
header __REALLY_FROM_MARK From =~ /.*milderbr.*/

score FAKE_FROM_MARK 0.1

but this does not scale. Instead, look for other patterns that catch
this spam. you can show (or use pastebin...) a sample if you want hints.