Hi everyone, please do excuse my unspecific subject - I don't really know what my problem is yet. I set up a Postfix-Server on my Fedora 21 box, which is connected to the internet via some Netgear Router. My private LAN is 192.168.10.0/24 with the Fedora box fixed on 192.168.10.1 . My Netgear thing has got a fixed IP and hostname, let's say for mydomain.com . Now I can - send myself mails from my Fedora box - send mails from my Fedora box to the outside p. ex. my googlemail account but I can't receive mails from outside. When I do a # tcpdump -n -i any tcp port 25 on my Fedora I can see many messsages like 10:34:09.338691 IP 212.227.17.11.64945 > 192.168.10.1.smtp: Flags [S], seq 3273717964, win 14600, options [mss 1418,sackOK,TS val 1273019143 ecr 0,nop,wscale 9], length 0 10:34:10.339378 IP 212.227.17.11.64945 > 192.168.10.1.smtp: Flags [S], seq 3273717964, win 14600, options [mss 1418,sackOK,TS val 1273019393 ecr 0,nop,wscale 9], length 0 [...] Any good ideas, what else I can do to analyze my problem? Thanks for your answers Peter -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org