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murrayrob is currently offline murrayrob

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New installation of Kerio Control.

We continually getting timeouts on smtp

Tried SSL and STARTTLS both giving problems.

Looking at a log generated by Thunderbird the time out happens when the client sends the <CRLF>.<CRLF>

The client does not receive the reply from the server.

The problem is intermittent

I know the upstream provider uses Fortigate. I need Kerio Control for bandwidth control and Content filtering.

Any ideas on how to get this working. I have no control over the Fortigate. But I am guessing that Fortigate or Kerio is dropping the connection before the smtp client receives the final reply from the smtp server.

This was working before installing Kerio Control, so I am guessing Kerio Control is the culprit, but possibly only when Fortigate is doing something upstream.
murrayrob is currently offline murrayrob

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using another mail client. It does not throw up so many errors as Thunderbird.

But occasionally still get smtp errors.
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