From: Ace Fekay [MCT] on
"JJ" <JJ(a)discussions.microsoft.com> wrote in message
news:CE677018-623B-4501-83AA-8EFEAD9A8D98(a)microsoft.com...
> Hello,
> I found where was problem, we have Astaro firewall(hardware appliance),
> this
> box have smtp proxy, antispam and antivirus functions, like greylisting,
> batv, spf chek, rbl chek and so on, found that one engine just hangs
> up(even
> without error message) for outgoing emails, disabled it and everything
> started to work. I will contact Astaro support for more information, but
> looks like everything is ok with Exchange. Yes, i believe in some
> situations
> it could be caused by installed antivirus, if it have some antispam or
> firewall functions, but not in this case.
>
>
> Thanks,
> JJ.

Good to hear you pinpointed the problem. Let us know what their tech support
says.

Ace