I am upgrading from 8.1 to 9.2 with a fresh installation. I have replicated all of the settings from the old server image.
Using ShieldsUp! at
www.grc.com, I find that all of my server's ports are in stealth mode.
An External user is unable to connect to the web server (HTTP), webmail (HTTPS) or mail server (POP3S).
Internal users can access the web server and webmail. We have not tested POP3 because the server has not received any messages.
No other equipment in the network has changed. The server is connected directly to the modem.
I have carefully walked through the Email configuration wiki (
https://wiki.contribs.org/Email) and the Server Administration Manual (
https://wiki.contribs.org/SME_Server:Documentation:Administration_Manual:Chapter13#E-mail).
The Dynamic DNS records have the correct IP address. When we configure the modem to allow ICMP, external users are able to ping the server successfully. The fresh installation uses the same domain name as the previous installation.
According to my understanding, this should be a drop in replacement. Can anyone provide suggestions on how to configure the used ports?