We are running a Win 2000 Server (SP4) with Exchange 2000 (SP3). Anti Virus software is by Trend and the anti Spam is GFI mailEssentials. I am getting delivery status notification (delay) errors on three particular domains that we send to. I have done the usual nslookup and then attempt to ping the mail server you get details of but I am unable to ping these particular servers either by DNS or IP. I am also unable to telnet onto these servers. I ran the same tests on known OK addresses and got through first time. All messages are currently being CC’d to alternaive private mail accounts (e.g. hotmail) and these get through fine. I’ve had a trawl through the FAQ’s etc here and read Comment from mrwilde Date: 07/05/2004 04:38PM PDT which has helped get me to the point where I am now. My instinct tells me that our server is fine but I’m not 100% sure. Is there anyone out there who can assist?
