Because of a hardware failure on an old installation of a postfix gateway I
took the opportunity to install an up to date version on an Ubuntu server. I am
not too far into the configuration but am having a basic problem with accessing
it from external sites. I think I can eliminate the usual DNS and router
configurations as it did work correctly with the old system.
The issue is that I can telnet into it internally with no problem but cannot
reach it externally. I hooked up wireshark and if I'm interpreting it correctly
I do find the initial SYN come in but no connection is established. My reading
suggests that I may have an ownership or permissions problem, but I'm not
finding success in isolating the issue.
Can anyone point out specifically what I should be looking at to diagnose and
correct this so I can get on to the meat of the configuration.
Thanks for any suggestions.
Gary
