I am receiving ndr's from one particular domain only.
Posted on 2006-10-26
I am running exchange 5.5 server all patched, since Tuesday I have not been able to email anyone at a customers site, they use a 3rd party email provider and I have explained to them (the provider) that I can't establish a telnet session from my exchange server, but I can from my desktop with a different public ip, but if I set the default gateway on my pc to the one I use for exchange I get the same result. I see the email hit my firewall and go out but I immediately get the ndr, they are requesting the logs from my exchange server but I am not sure if we are looking in the wrong place to resolve this problem. I haven’t changed anything and they claim no changes were made on their side. Any suggestions are appreciated.