Why is it never *their* fault? :) I had the exact same issue and it took 2 months for me to convince them that they had to contact their ISP to make the change.
-----Original Message----- From: Roger Seielstad [mailto:[EMAIL PROTECTED]] Sent: Monday, April 15, 2002 4:17 PM To: Exchange Discussions Subject: RE: DNS for wbpr.com The preference can be anything from 0 to 65534 or so. 10 tends to be customary as primary, but it doesn't matter. The issue is indeed on their end - specifically their DNS entries. Your IMC is doing a lookup for ALL MX records for wbpr.com, and gets back just one - mail.wbpr.com. When it looks that up to find the IP address, its dealing with round robin DNS - you roll the dice and you take your chances. But, your DNS server will cache that value for a length of time (determined by their zone information). Generally that's >4 hours. Now - since your IMC will retry every 4 hours or so, because it's a transient error (can resolve via DNS but the server isn't available) - you're going to end up with that data live in the cache for a while... In other words. You lost the roll of the dice. The issue is their DNS and only their DNS. Roger ------------------------------------------------------ Roger D. Seielstad - MCSE Sr. Systems Administrator Peregrine Systems Atlanta, GA > -----Original Message----- > From: Kevin Miller [mailto:[EMAIL PROTECTED]] > Sent: Monday, April 15, 2002 4:08 PM > To: Exchange Discussions > Subject: RE: DNS for wbpr.com > > > DDNS hosted DNS with a multi homed server that is autoupdateing//?? > > Why is the cost 100?? Should be like 10. > > --Kevinm TSSSBE, M, WLKMMAS, UCC+WCA, And Beyond > http://www.daughtry.ca/ For Graphics and WebDesign, GO here! > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]] On Behalf Of > Martin Blackstone > Sent: Monday, April 15, 2002 1:04 PM > To: Exchange Discussions > Subject: RE: DNS for wbpr.com > > > I see what you are talking about. > Mail.wbpr.com has 2 IP's. > > Strange.... > > Non-authoritative answer: > wbpr.com MX preference = 100, mail exchanger = mail.wbpr.com > > wbpr.com nameserver = nameserver.coqui.net > wbpr.com nameserver = nameserver.coqui.com > mail.wbpr.com internet address = 196.42.23.4 > mail.wbpr.com internet address = 64.213.243.212 > nameserver.coqui.net internet address = 196.28.61.36 > nameserver.coqui.com internet address = 196.28.61.66 > > -----Original Message----- > From: Lynne July [mailto:[EMAIL PROTECTED]] > Sent: Monday, April 15, 2002 12:58 PM > To: Exchange Discussions > Subject: DNS for wbpr.com > > > Our client, wbpr.com, appears to have issues with their DNS > records. They have 2 MX records with the same preference, and > one of the boxes > (64.213.243.212) does not respond. Of course, *my* DNS > server tries to connect to that one first, resulting in the > dreaded "Host Unreachable" error. The 2nd IP is never attempted. > > If I hard code the good IP (196.42.23.4) in the IMS, > magically the mail delivers. > > Of course, the customer claims no one else on earth is having > problems sending them mail. Obviously it's a DNS issue - but > is it *my* DNS server's fault that it never looks for the 2nd > IP address, or is it their problem? (dnsstuff.com couldn't > even connect to their mail server, so I'm voting for it's > their problem.) > > Many thanks. > > Lynne July > > _________________________________________________________________ > 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]
