We run a Novell Groupwise server that had been connected directly to the internet using one of its NICs. Last week we put a Linksys WRT54G router with DD-WRT firmware (v23 sp2) between the Novell server and the cable modem. We have two employees with Blackberry phones that pull their email from the Groupwise server (using pop3; we do not have BB Enterprise Server). Since putting in the Linksys, they are not receiving their emails on the Blackberry devices. Of course, I have POP and SMTP ports forwarded to the Groupwise server, but I think the Blackberry requests use additional ports, but I have not been able to determine which ones I need to open.
Help greatly appreciated.