How do I need to set my firewall for ePOST?
In general, ePOST only requires that port 10001 be opened on both TCP and UDP for correct functioning. The new UPnP support in version 2.4.6 can take care of this for you. If you would like to connect to your proxy from other machines with your mail client, you should also open up port forwarding on your IMAP port (default 1143) and SMTP port (default 2025).