I am also tinkering with Amibinkd v9.02 and can get it to connect to a
Mystic host, but no packets were ever exchanged, and also when that Mystic
system calls my system as a net call, there is also no answer from Amibinkd.  I
 have the same default ports open.  I can share my config if you would like. 
Maybe we can get this thing to work one day!?
 
  
             //
            // Gary McCulloch of Reign Of Fire BBS. rofbbs.ddns.net:2300
          \X/ JoinLink - RetroNet - C=Net - FidoNet    (931)/494-9100
  
--- CNet/5
 * Origin: Reign Of Fire: rofbbs.ddns.net:2300 / (931)494-9100 (1:154/50)