Hello,
I like to enable the allow_nets Feature (http://wiki2.dovecot.org/PasswordDatabase/ExtraFields/AllowNets) for my customers. To help them knowing there own IP I imagine a special mailbox/loginuser at the pop3 server.
That user could give a valid pop3 answer from a dummy pop3 server orsimply throw a login error with customised answer containing the IP information.
Has anybody done something similar or ideas to build such a system? Thanks for ideas Andreas