Incoming mail problem and LAN connection problem

When I try port checker web sites, it says port 25 is closed but if I connect to VPN with my PC and telnet my server at port 25, it is connecting. Really strange.
 
I don't know how the VPN is setup up. But if port checker says it's closed then mostly it is indeed closed.
And as said, I tried with 2 different servers (1 in Germany and 1 in Finland) and both could not connect.

Only other option I can think of otherwise is that only very little part of internet in the firewall is opened by your ISP.
 
Lavien said:
When I try port checker web sites, it says port 25 is closed but if I connect to VPN with my PC and telnet my server at port 25, it is connecting. Really strange.
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If your server has local IP, then you will need to check the routing and firewall settings. When you connect to the server from your local network, local IP is used. When you use VPN, then public IP address is used. You can not solve routing issues by re-installing DirectAdmin.

Search and read: https://www.google.com/search?q=local+server+behind+nat+is+not+accessible+from+local+network
 
Maybe my main problem is the router given by my ISP. I will try different one for hidden firewall or closed port issues
 
Once again, when you have a server behind NAT, and you try to connect from localnet, you might have various routing issues. You try to connect a public IP from a local IP. A router and/or server might block such requests. And you might need to configure Source based routing on the server or on the router. This is what is coming to my mind, based on what you wrote.

This is my final posting in the thread. I hope you will get the issue fixed. If you have other questions, I will be happy to help you.
 
I will try something different. Is there any documentation for Amazon SES (simple email service) integration to directadmin? I want to send and receive emails through SES without using port 25. Is it possible?
 
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