| Re: Problems sending mail through Kerio - advice on using another SMTP server on the LAN? [message #129266 is a reply to message #129261] |
Thu, 28 April 2016 23:30   |
dave2ic
Messages: 8
Registered: April 2016
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freakinvibe wrote on Thu, 28 April 2016 23:01It seems like something cuts the connection after 2 minutes. Is there any firewall, proxy etc. between your KC server and the Internet?
If you have Fortinet or Cisco, try to switch off "SMTP Inspection". This can cause issue like this.
The connection cutting after 2 minutes sounds about right. At the ADSL upload speed, 2 minutes would be enough to send about 10-12MB, which is about what we get before getting these timeout errors.
There is no firewall/proxy - the gateway for the server is the ADSL modem, which has nothing blocked outgoing. We even changed the modem from a TP-Link to a Zyxel recently and it has made no difference.
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