Hi, why would anyone want to continue to talk to a non-existing SMTP server on a dynamic IP (/var/log/firewall log excerpt below)? I figure that the other side had some kind of ... hiccup? Similarly, why would someone want to literally keep spamming port 6346 (GNUtella?) for almost two hours considering that there is exactly nothing that will reply? TIA, Stefan ********************************** Jul 27 15:18:12 yyyyyyy kernel: Packet log: input DENY ppp0 PROTO=6 131.177.130.21:44026 xxxxxxxxxxxxx:25 L=44 S=0x00 I=20565 F=0x4000 T=238 SYN (#102) [heaps and loads of the same killed - every 20 to 60 seconds] Jul 27 19:03:03 yyyyyyy kernel: Packet log: input DENY ppp0 PROTO=6 131.177.130.21:49032 xxxxxxxxxxxxx:25 L=44 S=0x00 I=12709 F=0x4000 T=238 SYN (#102) ********************************** Jul 27 02:37:25 yyyyyyy kernel: Packet log: input DENY ppp0 PROTO=6 24.0.37.182:3687 xxxxxxxxxxxxx:6346 L=48 S=0x00 I=46490 F=0x4000 T=104 SYN (#102) [heaps and loads of the same killed] Jul 27 04:10:26 yyyyyyy kernel: Packet log: input DENY ppp0 PROTO=6 24.0.37.182:4501 xxxxxxxxxxxxx:6346 L=48 S=0x00 I=23957 F=0x4000 T=104 SYN (#102)