Joel Jaeggli <joelja@darkwing.uoregon.edu> writes: > It's just sitting in the users mail spool... pop3 is just a tool for > mua's without filesystem access to get access to the mail in the > spool... if you want to do stuff to mail before you deliver it to the > user, you do that in the mta, after, the mua. This mostly isn't the way that large mail systems work any more. For example, at Stanford, we use Cyrus IMAP as our mail system (which also provides a POP interface). It stores mail in an internal database that cannot be accessed easily through the file system no matter what access you have or mail client you use; the mail is available only via POP or IMAP. It is therefore entirely possible to do things to the mail in the Cyrus IMAP servers if one really wanted to (and in fact there's a standard for doing filtering in the server). -- Russ Allbery (rra@stanford.edu) <http://www.eyrie.org/~eagle/>