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Mail delivered to the root of domain not MX recordWe are occasionally getting relay or non delivery messages from our Exchange
2003 server. Closer inspection reveals that the exchange server has tried to deliver to the root of the internet domain and not the MX record. eg it delivers to destinationdomain.com and not mail.destinationdomain.com that is specified in the MX record for the domain. Any ideas on how to stop exchange sending to the root of the domain? On Wed, 22 Mar 2006 21:37:27 -0800, Michael
<Mich***@discussions.microsoft.com> wrote: >We are occasionally getting relay or non delivery messages from our Exchange There isn't a record for domain.com as you would see an IP address for>2003 server. Closer inspection reveals that the exchange server has tried to >deliver to the root of the internet domain and not the MX record. > >eg it delivers to destinationdomain.com and not mail.destinationdomain.com >that is specified in the MX record for the domain. Any ideas on how to stop >exchange sending to the root of the domain? it so what IP address does the email actually arrive at? A possibility is that it can't find an MX record for the domain, in which
case RFCs state to attempt to use an A record. For example if it's trying to send email to u***@microsoft.com it'll first look for an MX record for the domain "microsoft.com" if that fails the RFCs state to do an A lookup on the domain "microsoft.com" and try delivery to that I believe. It looks like it's doing exactly what the RFCs say it should do if an MX lookup on the domain doesn't produce any results? Peter Lawton Show quote "Michael" <Mich***@discussions.microsoft.com> wrote in message news:A635F4F2-E9EC-4E32-9512-D4199F35899A@microsoft.com... > We are occasionally getting relay or non delivery messages from our > Exchange > 2003 server. Closer inspection reveals that the exchange server has tried > to > deliver to the root of the internet domain and not the MX record. > > eg it delivers to destinationdomain.com and not mail.destinationdomain.com > that is specified in the MX record for the domain. Any ideas on how to > stop > exchange sending to the root of the domain? Hi Mchael,
The picture here is not that clear! Now you are sending from your exchange to another domain "destinationdomain.com" ? If you check MX record for destinationdomain.com, it should resolve to an IP address or a host name. Use nslookup or dnsstuff.com and check what are the records, sure there is a problem with them. Show quote "Michael" wrote: > We are occasionally getting relay or non delivery messages from our Exchange > 2003 server. Closer inspection reveals that the exchange server has tried to > deliver to the root of the internet domain and not the MX record. > > eg it delivers to destinationdomain.com and not mail.destinationdomain.com > that is specified in the MX record for the domain. Any ideas on how to stop > exchange sending to the root of the domain? Thanks for the reply
The exchange server is trying to send to u***@destinationdomain.com destinationdomain.com has a MX record that points to mail.destination.com the root of the domain (detsinationdomain.com) points to their web server 95% of the time it delivers mail correctly to mail.destinationdomain.com, however sometimes we will get a bounce back and from looking at the email our exchange server has tried to deliver to destinationdomain.com and not mail.destinationdomain.com. The webserver responds to the email saying there is no such user here Show quote "Loay Olabi" wrote: > Hi Mchael, > The picture here is not that clear! > Now you are sending from your exchange to another domain > "destinationdomain.com" ? > If you check MX record for destinationdomain.com, it should resolve to an IP > address or a host name. > Use nslookup or dnsstuff.com and check what are the records, sure there is a > problem with them. > -- > Loay Olabi > MCSA, MCSE > Website: http://www.olabinet.net > Blog: http://www.olabinet.net/loay > > > "Michael" wrote: > > > We are occasionally getting relay or non delivery messages from our Exchange > > 2003 server. Closer inspection reveals that the exchange server has tried to > > deliver to the root of the internet domain and not the MX record. > > > > eg it delivers to destinationdomain.com and not mail.destinationdomain.com > > that is specified in the MX record for the domain. Any ideas on how to stop > > exchange sending to the root of the domain? Do they have multiple DNS servers with inconsistent records - so when you
hit one you find the MX and when you hit the other you don't and therefore Exchange delivers to the A record for that domain? -- Show quoteBharat Suneja MCSE, MCT www.zenprise.com blog: www.suneja.com/blog ----------------------------------------- "Michael" <Mich***@discussions.microsoft.com> wrote in message news:7D4E19E2-496F-4173-9F0B-A1DB3B05C104@microsoft.com... > Thanks for the reply > > The exchange server is trying to send to u***@destinationdomain.com > > destinationdomain.com has a MX record that points to mail.destination.com > > the root of the domain (detsinationdomain.com) points to their web server > > 95% of the time it delivers mail correctly to mail.destinationdomain.com, > however sometimes we will get a bounce back and from looking at the email > our > exchange server has tried to deliver to destinationdomain.com and not > mail.destinationdomain.com. The webserver responds to the email saying > there > is no such user here > > > "Loay Olabi" wrote: > >> Hi Mchael, >> The picture here is not that clear! >> Now you are sending from your exchange to another domain >> "destinationdomain.com" ? >> If you check MX record for destinationdomain.com, it should resolve to an >> IP >> address or a host name. >> Use nslookup or dnsstuff.com and check what are the records, sure there >> is a >> problem with them. >> -- >> Loay Olabi >> MCSA, MCSE >> Website: http://www.olabinet.net >> Blog: http://www.olabinet.net/loay >> >> >> "Michael" wrote: >> >> > We are occasionally getting relay or non delivery messages from our >> > Exchange >> > 2003 server. Closer inspection reveals that the exchange server has >> > tried to >> > deliver to the root of the internet domain and not the MX record. >> > >> > eg it delivers to destinationdomain.com and not >> > mail.destinationdomain.com >> > that is specified in the MX record for the domain. Any ideas on how to >> > stop >> > exchange sending to the root of the domain?  |
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