Search Again: Re: trace route with dns expert From: Men & Mice Support Date: Tuesday, November 6, 2001 Time: 3:07:56 am At 4:48 PM -0800 11/5/01, rashantha de silva wrote: >hello > >we have been having problems sending mail to accounts at target.com > >i ran a trace route on target.com and it stops at 19 hops and it seems like >the hops take a detour > >from alter.net to >customer.alter.net and stops there. They're probably blocking ping packets at that point. I can connect to their mail server(s) - it's unclear how many they have because: - they list two names in their MX records, but - both names resolve to the same address, but - when I connected to that IP address several times (trying the different names), the servers identified themselves using different names (neither of which match the names in the MX records). It would appear that SMTP traffic actually goes through some sort of load-balancing proxy or port-mapping server, and from there to at least two different SMTP servers. >does traffic actually go from a backbone down to lower levels such as a dsl >line or via frame relay? You mean in this case? Obviously the traffic goes somewhere, since I can connect to the SMTP servers involved. Note that the SMTP servers' public IP address is not on the same subnet as target.com (which is likely the web server). ____________________________________________________________________ Chris Buxton Men & Mice support@menandmice.com Making DNS Easy

Messages In This Thread: trace route with dns expert by rashantha de silva on Nov 5, 2001 at 4:47:00 pm Re: trace route with dns expert by Men & Mice Support on Nov 6, 2001 at 3:07:56 am Re: trace route with dns expert by Mia''s Virtual Post Office on Nov 6, 2001 at 8:28:04 am