logging imap & pop traffic per user

[Caspar von Seckendorff]

Hi everybody,

we have a cyrus-pop & imap server with several virtual domains installed. As
we have to pay by traffic it would be great to know how much traffic each
cyrus-user produces by 'poping' and 'imaping'. Is there a way to log this
information into a file, or even better into a db?

-Caspar