Virus / spam messages on lists

[Joseph S. Myers]

A few "virus removed" messages have appeared on libc-alpha, e.g.  
<http://sources.redhat.com/ml/libc-alpha/2003-09/msg00217.html>.  These
messages don't appear to mention libc-alpha anywhere in the To or CC
headers - I thought there was an antispam measure requiring the list name
to appear in those headers?  Or is that only for the GCC lists?

gcc-regression gives a subjective impression of receiving rather more spam 
than the other GCC lists.  Are there some antispam checks enabled for 
other lists that are disabled for gcc-regression?

-- 
Joseph S. Myers
jsm@polyomino.org.uk