Yes, the Sophos appliance is set as a smart host. I’m currently using the FQDN of the appliance. I’ll try using its IPv4 address.
Thanks! From: [email protected] [mailto:[email protected]] On Behalf Of Kurt Buff Sent: Thursday, February 02, 2017 11:57 PM To: ntsysadm Subject: Re: [NTSysADM] Exchange sending via IPv6 Are you using the Sophos appliance as a smarthost? Are you using the FQDN of the appliance, or its IPv4 address? If the former, try the latter. I'd verify the vendor's claim, BTW - "netsh trace" is your friend: https://msdn.microsoft.com/en-us/library/windows/desktop/dd569142(v=vs.85).aspx and https://blogs.msdn.microsoft.com/canberrapfe/2012/03/30/capture-a-network-trace-without-installing-anything-capture-a-network-trace-of-a-reboot/ Kurt On Thu, Feb 2, 2017 at 8:13 PM, Kelsey, John <[email protected]<mailto:[email protected]>> wrote: Working on a new Exchange 2013 install. Outbound emails are failing and our front-end email appliance vendor (Sophos) says its failing because Exchange is sending the outbound emails using its ipv6 address instead of its ipv4 address and the Sophos appliance doesn’t understand ipv6 ( I know, right?) I don’t see any obvious place to configure this in Exchange, and I know that disabling ipv6 in Exchange is baaaaaad. So can I force Exchange to send only using its ipv4 address somehow? Thanks all. *************************************** John C. Kelsey, MCSE, CCNA Network Architect Penn Highlands Healthcare •: 814.375.3073<tel:(814)%20375-3073> • : 814.375.4005<tel:(814)%20375-4005> •: [email protected]<mailto:[email protected]> *************************************** This email and any attached files are sensitive in nature and intended solely for the intended recipient(s). If you are not the named recipient you should not read, distribute, copy or alter this email. Any views or opinions expressed in this email are those of the author and do not represent those of Penn Highlands Healthcare or its affiliates.. Warning: Although precautions have been taken to make sure no viruses are present in this email, the company cannot accept responsibility for any loss or damage that arise from the use of this email or attachments. This email and any attached files are sensitive in nature and intended solely for the intended recipient(s). If you are not the named recipient you should not read, distribute, copy or alter this email. Any views or opinions expressed in this email are those of the author and do not represent those of Penn Highlands Healthcare or its affiliates.. Warning: Although precautions have been taken to make sure no viruses are present in this email, the company cannot accept responsibility for any loss or damage that arise from the use of this email or attachments.
