It's connecting to the server it should based on the DNS information it is 
provided. You may have a problem with your DNS infrastructure which is causing 
the proper results to not be returned. If your ISP's DNS servers are the 
forwarders you are using for your internal DNS, these could indeed be the 
problem. You could ask them for a better/different set of forwarders.

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jean-Paul Natola
Posted At: Wednesday, August 27, 2008 8:43 AM
Posted To: swynk
Conversation: Exchange intermittently connecting wrong servers
Subject: Exchange intermittently connecting wrong servers

Hi all,

I'm not sure where to start here, but after getting numerous complaints
regarding the inability to send mail - I have tracked the source of the
problem. For some reason my exchange server randomly decides to send mail to
the wrong server -

Here's one example;

 User sends to her earthlink account; connects to 209.86.93.228  result OK

2008-08-26 14:28:49 209.86.93.228 OutboundConnectionResponse SMTPSVC1 FCI-EX
- 25 - 250+1kxZxmZz3Nl34g0+Message+accepted+for+delivery 0 SMTP - -
2008-08-26 14:28:49 209.86.93.228 OutboundConnectionCommand SMTPSVC1 FCI-EX -
25 QUIT - 0 SMTP - -
2008-08-26 14:28:49 209.86.93.228 OutboundConnectionResponse SMTPSVC1 FCI-EX
- 25 - 221+mx-pigeons.atl.sa.earthlink.net+closing+connection 0 SMTP - -

Later on in the day she sends another email; my server decides to connect to
209.86.93.201 - result Not OK

2008-08-26 18:09:26 209.86.93.201 OutboundConnectionResponse SMTPSVC1 FCI-EX
- 25 -
550+Authentication+required.+Help+at+http://www.earthlink.net/go/emailsetting
s 0 SMTP - -

Nslookup tells me;
mx1.earthlink.net       internet address = 209.86.93.226
mx2.earthlink.net       internet address = 209.86.93.227
mx3.earthlink.net       internet address = 209.86.93.228
mx4.earthlink.net       internet address = 209.86.93.229


So I know why its failing - I know what it is going wrong , but WHY is it
doing this and how do I correct it

Could my ISP's DNS servers be on the fritz?

And its not just happening with earthlink-



thanks


Jean-Paul



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