Goodmorning Guys,
I have a question about Astaro Smtp Proxy Configuration.
After enabled Smtp, I bounded smtp to only one public interface using this KB: Limiting port 25 on a specific external interface on Astaro Security Gateway
Outbound is fast while inbound is very slow. In Smtp proxy log, I see connection from an external email server but smtp connection does not finish in time. So the external mail server needs to connect to astaro several time to take the connection and delivery email.
I tried mxoolbox and it says: "Server disconnected before banner was complete".
I created skip rule on smtp for one domain, and email is being delivered fast.
So it seams that astaro close connection for timeout.
If I disable smtp proxy, mail is delivered istantly(of course I created a Dnat rule in this case).
Is there any way to increase timeout connection?
Do you have any solution for that?
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