Am 09.04.2015 um 12:07 schrieb Peter Ulrich Kruppa:
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
.
Now let's test something bad and completely turn of my firewalld !
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