-----Original Message----- From: Marvin Cummings [mailto:marvc@xxxxxxxxxxxxx] Sent: Wednesday, December 24, 2003 9:42 AM To: [ExchangeList] Cc: '[ExchangeList]' Subject: [exchangelist] Mail delayed and not reaching some external destinations http://www.MSExchange.org/ I'm getting the following error returned on some of the email I send to external clients: Delivery to the following recipients has been delayed. I get this error a couple of days or hours after sending the email. A search of this error on Google returns a few links that seem to point to the connection being refused but I'm not sure. Can anyone confirm and provide some type of direction on how to troubleshoot this? Any responses are appreciated. Marvin, How about some specifics 1) Your Domain, IP 2) Domain your trying to mail 3) Any recent changes to network 4) Windows & Exchange Version Find a representitive email and try to connect to the mailserver of that domain by telneting from your exchange server on port 25, try both by name and IP. John