Wingate 7 SMTP 421 error

[Mumia76]

Hi

When I try to send mail from an external network through the wingate smtp service, I get error 421 in my client (outlook 2010). I checked the wingate log and this is what it says:

Client closed connection unexpectedly Expecting MAIL - terminating

I'm using the free 3 user license right now, I have a valid license for wingate 6 but only plan to upgrade if everything works fine.

[adrien]

Hi

Is it possible more that 3 clients are connected? WinGate will send a 421 back to a mail client if the license count limit is exceeded.

if this is the problem, activating a trial license would fix it.

Regards

Adrien de Croy

[Mumia76]

Hi

Is it possible more that 3 clients are connected? WinGate will send a 421 back to a mail client if the license count limit is exceeded.

if this is the problem, activating a trial license would fix it.

Regards

Adrien de Croy

It happens even if there are no clients connected at all.

[Mumia76]

I've just activated a trial license, and I still get the 421 error. And its also the same in wingate.

8 1 2013.01.10. 10:46:54.760 80.98.192.*** Unknown SMTP Server 4312 5 Warning 0 Client closed connection unexpectedly expecting MAIL - terminating

[adrien]

Can you enable debug logging in the SMTP server, and post a larger set of log entries please?

Regards

Adrien

[Mumia76]

I've found the problem, it turns out that the cause is not Wingate but Avast Business Endpoint Protection Suite Plus