It seems that you are using the Exchange to deliver mail directly using DNS lookup. Have you tried to reconfigure that to send to say your ISP's relay server, and see if that gets sent to this particular address. If it sends fine that way, the you know for sure it's a Exchange issue.
Andrew, MCSE (NT & W2K) + CCNA -----Original Message----- From: Joe Pochedley [mailto:[EMAIL PROTECTED]] Posted At: Wednesday, March 13, 2002 9:11 AM Posted To: DiscussionGroup Conversation: Network Error During Host Resolution Subject: RE: Network Error During Host Resolution I know there's no MX record (I stated that in my original post). According to the RFC for SMTP (forget the number right now), if there's no MX record but there is an A record (which there is) then the SMTP server should use the A record as an MX record and attempt delivery to the address referenced in the A record. I tried telling the folks at the remote company that they should haven an MX record for their subdomain, but got the "Nobody else is having a problem so we're not going to do anything about it." type response. Re: To the person who asked about telnet testing... I tried Telnet testing and get a 220 connect message from de.durr-usa.com, but when a send a HELO command, I never get a 250 response back. Again, according to the folks at the remote end, "Nobody else is having a problem..." Thanks....... Still looking...... Joe Pochedley "I like deadlines," cartoonist Scott Adams once said. "I especially like the whooshing sound they make as they fly by." -----Original Message----- From: Nick Field [mailto:[EMAIL PROTECTED]] Sent: Wednesday, March 13, 2002 11:56 AM To: Exchange Discussions Subject: RE: Network Error During Host Resolution There does not appear to be a MX record for de.durr-usa.com Perhaps this is your problem. Nick -----Original Message----- From: Joe Pochedley [mailto:[EMAIL PROTECTED]] Sent: 13 March 2002 16:40 To: Exchange Discussions Subject: Network Error During Host Resolution Kind ladies and gentlemen of the list. I am sending this message again in hopes that someone will be able to help me. I'm not intending to spam the list, just looking for some assistance. I've heard from a few people off list that they've also experienced similar problems, but none of them have / had a solution and were hoping that I had found something with yesterday's inquiry....... If anyone out there can help, or at least give me another direction to explore I would greatly appreciate it. (I know about MS PSS and it is my final option, but I'd rather not go there). My Exchange Server is v5.5 SP4 Problem is as follows: -Begin Quoted Error Message- Your message did not reach some or all of the intended recipients. Subject: RE: Durr Industries Sent: 3/10/02 1:11 PM The following recipient(s) could not be reached: '[EMAIL PROTECTED]' on 3/12/02 1:01 PM The recipient name is not recognized The MTS-ID of the original message is: c=US;a= ;p=namfg;l=SEQUOYAH-020310181103Z-71 MSEXCH:IMS:namfg:cleveland:SEQUOYAH 3499 (000B09AA) network error during host resolution [EMAIL PROTECTED] on 3/12/02 1:01 PM The recipient name is not recognized The MTS-ID of the original message is: c=US;a= ;p=namfg;l=SEQUOYAH-020310181103Z-71 MSEXCH:IMS:namfg:cleveland:SEQUOYAH 3499 (000B09AA) network error during host resolution -End Quoted Error Message- I'm getting this error when trying to send to de.durr-usa.com, and have in the past had this error on a few other addresses, but the message has always eventually gone through in the past. This time though, I can't get anything to go through to de.durr-usa.com. Supposedly, we have been able to send to these recipients in the past, but it's only been in the past two months that there have been any problems that the end user has complained about... No changes have been made to our Exchange Server or DNS servers for at least the past 4-6 months. I am able to look up de.durr-usa.com using the same DNS server that the exchange server is using, so it's not that the DNS server can't resolve the host name... I looked up durr-usa.com's DNS records and there is no MX record for the sub domain 'de' but there is an A record, so theoretically the Exchange SMTP service should use the A record in place of the MX record, correct? I am at a loss. Thanks in advance. Joe Pochedley _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Archives: http://www.swynk.com/sitesearch/search.asp To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Archives: http://www.swynk.com/sitesearch/search.asp To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED]
