[44net] Mail gateway from HF BBS to Internet ?

Hi there is there any system that allow to send mail from internet (say in our case from User(a)ampr.org) to any BBS (again in our case user@bbs-callsign) ? 15 years ago we did it and we could send mail from internet to any BBS vice versa we had a Engine on the bbs that pick up any Email address and send it to the Internet gateway and same was on the internet that mail from internet to user@bbs was forward to the bbs so is there any system that do it today ? Thanks for any info Ronen - 4Z4ZQ http://www.ronen.org