I just checked my queue and verified all those emails that were in there with status of "Network error during host resolution" and they all were missing an MX record. So it seems like my Exchange 5.5. server just will not send to domains missing an MX record. Any help on this would be much appreciated. Even if you are facing a similar situation...kindly share it. Thanks
-----Original Message----- From: Chris Scharff [mailto:[EMAIL PROTECTED]] Sent: Wednesday, August 28, 2002 5:07 PM To: Exchange Discussions Subject: RE: No MX Record ? It's not just that the site is missing an Mx record, they also lack a valid PTR for their A record. The number of domains which so poorly manage their DNS is thankfully small, relatively speaking. > -----Original Message----- > From: RBHATIA [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, August 28, 2002 3:56 PM > To: Exchange Discussions > Subject: RE: No MX Record ? > > > I had to relay to work around this issue. Has anyone else had > similar issues with Exchange 5.5 not being able to send email > to domains with a missing MX record ? > > > -----Original Message----- > From: Blunt, James H (Jim) [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, August 28, 2002 3:11 PM > To: Exchange Discussions > Subject: RE: No MX Record ? > > > Our incoming mail comes through a Linux-based mail relayer, > while our outgoing goes from the IMS through our proxy > server, which also doubles as our DNS lookup server. And > no...the proxy doesn't have 5.5 installed on it. > > -----Original Message----- > From: Baker, Jennifer [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, August 28, 2002 11:54 AM > To: Exchange Discussions > Subject: RE: No MX Record ? > > > After looking at his dns, I'm amazed his mail works at all. > > Is your relay server a 5.5 server? It doesn't act like one, > which is probably why it does work. > > -----Original Message----- > From: Blunt, James H (Jim) [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, August 28, 2002 10:52 AM > To: Exchange Discussions > Subject: RE: No MX Record ? > > > Jennifer, > > I hate to argue, but that statement is incorrect. Exchange > 5.5 SP4 does in fact send e-mail to a domain, if no mx record > exists. I know this because one of our admins sends e-mail > to his personal mail server from work all the time. His > domain name is hopeless.nu and his mail is located at > mail.hopeless.nu. Doing an NSLOOKUP on this domain shows no > mx record for hopeless.nu and only a cname record for > mail.hopeless.nu. > > Jim > > -----Original Message----- > From: Baker, Jennifer [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, August 28, 2002 9:35 AM > To: Exchange Discussions > Subject: RE: No MX Record ? > > > 5.5 requires an mx record to send mail. This is not RFC > behavior IMO. E2k does not require it and uses the "a" > record if an "mx" record is not present. > > -----Original Message----- > From: RBHATIA [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, August 28, 2002 9:24 AM > To: Exchange Discussions > Subject: RE: No MX Record ? > > > I did look up the RFC...and am soliciting a response from > this list since it wasn't much help in resolving my problem. > Here is an excerpt from the RFC that doesn't apply to my > Exchange server : The lookup first attempts to locate an MX > record associated with the name. > If a CNAME record is found instead, the resulting name is > processed as if > it were the initial name. If no MX records are found, but an > A RR is found, the A RR is treated as if it was associated > with an implicit MX RR, with a preference of 0, pointing to that host. > > In this case there is an A record associated with > HOUSTONFEARLESS.COM - 65.204.137.153 So why do the emails > still sit in the queue ? > > > -----Original Message----- > From: Andy David [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, August 28, 2002 12:19 PM > To: Exchange Discussions > Subject: RE: No MX Record ? > > > RFC2821 > > > > -----Original Message----- > From: RBHATIA [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, August 28, 2002 12:09 PM > To: Exchange Discussions > Subject: RE: No MX Record ? > > > How does Exchange 5.5 handle mail in the absence of an MX record ? > > > -----Original Message----- > From: Andy David [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, August 28, 2002 12:13 PM > To: Exchange Discussions > Subject: RE: No MX Record ? > > > One does not absolutely need a MX record to receive mail. > > > -----Original Message----- > From: RBHATIA [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, August 28, 2002 12:03 PM > To: Exchange Discussions > Subject: No MX Record ? > > > Hi, > I've been having problems sending email to users in a domain > called houstonfearless.com The IMC queue states "Network > error during host resolution". I did some troubleshooting and > it seems like the domain does not have an MX record. I'm > running Exchange 5.5. SP4 that is using DNS to send email > externally. What's wierd though is that they are receiving > email from other people. I even sent them a test message from > my YAHOO account and they received it. Any ideas ?? > > _________________________________________________________________ > 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] > > > -------------------------------------------------------------- > -------------- > -- > The information contained in this email message is privileged > and confidential information intended only for the use of the > individual or entity to whom it is addressed. If the reader > of this message is not the intended recipient, you are hereby > notified that any dissemination, distribution or copy of this > message is strictly prohibited. If you have received this > email in error, please immediately notify Veronis Suhler > Stevenson by telephone (212)935-4990, fax (212)381-8168, or email > ([EMAIL PROTECTED]) and delete the message. Thank you. > > ============================================================== > ============== > == > > > _________________________________________________________________ > 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] > > -------------------------------------------------------------- > -------------- > -- > The information contained in this email message is privileged > and confidential information intended only for the use of the > individual or entity to whom it is addressed. If the reader > of this message is not the intended recipient, you are hereby > notified that any dissemination, distribution or copy of this > message is strictly prohibited. If you have received this > email in error, please immediately notify Veronis Suhler > Stevenson by telephone (212)935-4990, fax (212)381-8168, or email > ([EMAIL PROTECTED]) and delete the message. Thank you. > > ============================================================== > ============== > == > > > _________________________________________________________________ > 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] > > _________________________________________________________________ > 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] > > _________________________________________________________________ > 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]
