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mdawes
Level 7
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Problem using MXLogic smarthosts with Small Business Server 2008/Exchange 2007

Hi - we have subscribed to the SAAS scanning of emails with our Total Protection Suite, and it has been working well until we upgraded to SBS2008 server. We now have a problem in that if we set the server to send via the mxlogic smarthost set up for us, we get a 4.4.2 error (connection dropped) - some emails appear to go OK, then the queue locks up, and starts giving this error.

I have disabled RSS etc on the server, and if we set to deliver direct via DNS the emails are flowing with no issues at all - has anybody else came across this, or have any idea of what the issue may be?

Thanks.

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mdawes
Level 7
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Re: Problem using MXLogic smarthosts with Small Business Server 2008/Exchange 2007

Not to worry -now sorted - appears we had a MTU black hole issue - enabled PMTUBHdetect and all is now OK...