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soffcecFlag for Iceland

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New ip address on Exchange causes problem.

I was changing IP addresses for my Exchage servers. After that I get this error every time when I try to send email to domains who are not on my exchange server:

Your message did not reach some or all of the intended recipients.

      Subject:      Test message
      Sent:      12.7.2009 23:07

The following recipient(s) cannot be reached:

      tsc@simnet.is on 12.7.2009 23:07
            There was a SMTP communication problem with the recipient's email server.  Please contact your system administrator.
            <dora.tsc.is #5.5.0 smtp;550 #5.7.1 Your access to submit messages to this e-mail system has been rejected.>
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Quetzal

New external IP addresses?  If so, are the ip's blacklisted from prior user of the addresses?  Do you have a an SPF rec for the domain pointing to the old addresses?
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ASKER

My old addresses was 194.105.237.x and the new ones are 157.157.162.x

I dont have SPF rec for the old address , my SPF rec applies to DNS name.
fe. v=spf1 a:sleggja.grundarfjordur.is -all
Avatar of Alan Hardisty
Are you sending out via a Smart Host?  If you are, they need to know your new IP Address.
Your mail is being filtered by a 3rd party on the way in - I am guessing you are sending out via a Smart Host.
Talk to your ISP / Smart Host and get then to accept mail from your new IP address.
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ASKER

I am trying both Smart host and no Smart host, but with the same result.
Check your IP on the following http://www.mxtoolbox.com/blacklists.aspx
 
ASKER CERTIFIED SOLUTION
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Alan Hardisty
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