Tom, We are running same Exchange 5.5, service pack 4 and have been identified as an open relay. We've tried several fixes, none have worked, been to several sites, etc. Any suggestions, I'm a newbie, thanks. Jennifer ----- Original Message ----- From: "Tom Avery" <tavery@xxxxxxxxxxx> To: "[ExchangeList]" <exchangelist@xxxxxxxxxxxxx> Sent: Tuesday, September 03, 2002 9:54 PM Subject: [exchangelist] The recipient was unavailable to take delivery of the message > http://www.MSExchange.org/ > > Hello everyone, > > I have encountered a very unique situation. I am running exchange server > 5.5 with service pack 4. I am receiving the following error when my users > send email to one specific domain (in this case AOL). > > Your message did not reach some or all of the intended recipients. > > To: 'XXX@xxxxxxx' > Subject: test > Sent: 9/3/02 7:02:38 PM > > The following recipient(s) could not be reached: > > 'gojeni@xxxxxxx' on 9/3/02 7:02 PM > > The recipient was unavailable to take delivery of the message > The MTS-ID of the original message is: c=US;a= ;p=American > Trailer;l=EXCHANGE-CDM-020904020238Z-78 > MSEXCH:IMS:American Trailer Corp.:CDM:EXCHANGE-CDM 3550 (000B09AA) 550 > 703.265.4670. > > What's interesting about this message, is that it is not DNS related. My > server was an open relay, but that has been corrected and the server's IP > has been removed from all the DNS block lists around including AOL. My > users can send and receive email to everywhere else except AOL. Another > interesting thing, is when I examine the e-mail header on the returned > message, it is blank (Listing no internet addresses or servers) which > leads me to believe the problem is within the exchange server itself. > > Has any one ever experienced this??? If so, I would love to hear how you > corrected it. > > Thanks, > Tom Avery > > ------------------------------------------------------ > You are currently subscribed to this MSExchange.org Discussion List as: jfinstad@xxxxxxxxxxxx > To unsubscribe send a blank email to $subst('Email.Unsub')