[Dovecot] triggering multiple actions on pop-3 request

[Julian Melville]

> The reason for this is so that the messages 
> retrieved by fetchmail can be filtered via an anti spam 
> service before depositing them into the inbox.

How about just running fetchmail in daemon mode, so it's polling for
messages instead of running on demand? Then you don't need to worry
about any special integration issues.

Julian.