Current Production Nethserver 6.10
Testing Replacement Nethserver 7.9.2009
Hello,
Our current Nethserver is configured to act as an Anti-Spam/Anti-Virus gateway to our Exchange Server. All mail filtered on the server is relayed to our Exchange Server.
Both Nethservers, production and test, and the Exchange server are in the same network. There are no firewall restrictions and the Exchange server is configured to accept mail from both Nethservers.
The relay is working flawlessly with the current Nethserver 6.10.
For NethServer 7.9.2009, after installing and updating, the “SMTP Proxy” package was installed. The “Email” package was not installed.
Our two email domains were added and both were configured with the Exchange Server as the “Destination Server” to relay the mail.
When performing a “Check Status” for both domains, it indicates that Port 25 is unreachable.
From the Nethserver, I can telnet to the Exchange on port 25.
If I understand correctly, the “Check Status” only tests if the server is reachable publicly on port 25 and not if it can relay to the destination server on port 25 when configured to relay mail.
I configured the domains to relay to another server and was under the impression that the “Check Status” was testing the relay on port 25. I guess that is not the case.
This is just a cosmetic problem that I have here as well. I have multiple static public IP’s. One of them is reserved for the mail function, while another one accepts requests for Nextcloud and Webtop. But the Nethserver itself reports to the WWW with a third IP, but the MX is not registered to it. That’s why I regularly see the red cross during the query.