Re: sorting mail... CC: and BCC:

Neil asked,

| I just wanted to know: can procmail be used to sort mail
| according to CC: and Bcc: (i.e. not only according to To: and From: ) ?

Cc:, yes.

Bcc:, generally not, because Bcc: headers are almost always stripped out 
by the mail transports and are not there in the text any more.