Hello good people,
The last couple of days I've been quite busy trying to solve this little issue I have. I am wondering aimlessly around in the Zimbra fora, trying to find a clue, but no succes. There seems to te a problem when I want to connect from outside the LAN to port 25 on my Zimbra server. Here is the situation:
- It is possible to connect to port 25 from my own LAN and send emails to it.
- I can not send emails to it or do a telnet session from the internet.
- no firewall on the Zimbra server
- NAT on my adsl box works good, because I currently use my old sendmail server to act as a relay for my Zimbra. I can telnet my relay server from the internet.
What is happening overhere? Did I miss anything while configuring the Zimbra server?