I had this problem once getting from my Exchange2k box to sunbelt. It would on occasion decide not to send and Q up messages. The only way for me to get it fixed was to not send to sunbelt until after midnight that night. The connection was being dropped 4 routers out just enough that we could say helo, send, then we were dropped. The Lyris server got mad at my server and put me on pause until midnight. This would happen maybe once every 2 weeks or some times every day. I must have spent 200 hours on that one. We got a new ISP and have never had the problem again. Off the same server sending to another domain I had to add custom routes in a router, and a local DNS zone to get email to hit one our of clients.
Some domains are just very picky and have to talked to nicely. This might be one of them for you. --Kevinm M, WLKMMAS, UCC+WCA, And Beyond Did I just say that out loud? -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Joe Pochedley Sent: Wednesday, March 13, 2002 12:09 PM To: Exchange Discussions Subject: RE: Network Error During Host Resolution Kevin, Appreciate your help (really, I'm not being facesious). Trying to "force" other companies to do things the "right" way is like trying to make my neighbors' dog stop barking at the newspaper delivery guy at 4 in the morning.... The thing that confuses me most though, is that we've successfully been mailing people at de.durr-usa.com for at least the past year and a half without incident. It's only been in the past month or so this has become an issue and it's only with a few select email servers. There are no routing or connectivity issues that I can find (our exchange server has routes in and two out)... Thanks again, but anyone else have any other ideas???? JoeP -----Original Message----- From: Kevin Miller [mailto:[EMAIL PROTECTED]] Sent: Wednesday, March 13, 2002 3:00 PM To: Exchange Discussions Subject: RE: Network Error During Host Resolution Make them get an Mx record. Or add one local in your DNS for them. If that does not work then you have a routing issue, or perhaps some other connection issue. --Kevinm M, WLKMMAS, UCC+WCA, And Beyond Did I just say that out loud? -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Joe Pochedley Sent: Wednesday, March 13, 2002 11:57 AM To: Exchange Discussions Subject: RE: Network Error During Host Resolution Kevin, The problem is that it isn't working... Looking through the IMC queue I see a message going to [EMAIL PROTECTED] with the "network error during host resolution" error message as the status... there's no MX record, but I can resolve hofferflow.com just fine and their mail server answers just fine to a telnet on port 25 at the address provided by the A record. It should work, but it's not working....... -----Original Message----- From: Kevin Miller [mailto:[EMAIL PROTECTED]] Sent: Wednesday, March 13, 2002 2:49 PM To: Exchange Discussions Subject: RE: Network Error During Host Resolution That would work as it is the top of your domain.. If you used bob.hofferflow.com you would not get anything.. --Kevinm M, WLKMMAS, UCC+WCA, And Beyond Did I just say that out loud? -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Joe Pochedley Sent: Wednesday, March 13, 2002 11:34 AM To: Exchange Discussions Subject: RE: Network Error During Host Resolution Kevin, Explain this one then.. Email going to [EMAIL PROTECTED] No MX record for hofferflow.com, but they do have an A record (12.4.104.2)... They're using their TLD as the mail exchanger but I'm still getting "Network Error durig host resloution" messages... I can telnet to hofferflow.com port 25 and get Exchange's ESMTP greeting...... ??? JoeP -----Original Message----- From: Kevin Miller [mailto:[EMAIL PROTECTED]] Sent: Wednesday, March 13, 2002 2:17 PM To: Exchange Discussions Subject: RE: Network Error During Host Resolution Read what I wrote. It explains you problem. You have to use your top level domain name it you don't have an MX record. --Kevinm M, WLKMMAS, UCC+WCA, And Beyond Did I just say that out loud? -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Joe Pochedley Sent: Wednesday, March 13, 2002 11:12 AM To: Exchange Discussions Cc: '[EMAIL PROTECTED]' Subject: RE: Network Error During Host Resolution Roger, If it's MailGuard that's causing the problem, why do emails to durr-usa.com seem to go through OK, but not the ones to de.durr-usa.com? -----Original Message----- From: Roger Seielstad [mailto: Sent: Wednesday, March 13, 2002 1:36 PM To: Exchange Discussions Subject: RE: Network Error During Host Resolution Hmmm... The tlot pickens.. bash-2.04$ telnet de.durr-usa.com 25 Trying 65.43.129.25... Connected to de.durr-usa.com. Escape character is '^]'. 220 ***************************************************2**0*0 ***** Tell their admins to change their PIX configuration to include: No fixup protocol smtp 25 Their PIX is running MaulGuard (oops, Mailguard), which has known issues with some ESMTP mailers (funny enough, Exchange is one of them). Its all over the CISCO support pages. Alternately, set your IMC to only use SMTP rather than ESMTP for that domain. I'd suggest, since they're being less than nice about it, you tell them their firewall is screwed up. Its more fun that way... I can't find the Cisco article about it, but those *** are indicative, IIRC. ------------------------------------------------------ Roger D. Seielstad - MCSE Sr. Systems Administrator Peregrine Systems Atlanta, GA > -----Original Message----- > From: Joe Pochedley [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, March 13, 2002 12:11 PM > To: Exchange Discussions > 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] _________________________________________________________________ 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] _________________________________________________________ Do You Yahoo!? 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