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i can recive but not send mail in exchange 2003

Hi basically we have just bought a new serevr whos jobs is goin to become ou r exchange server.

Our current exchange server is also a DC so intention is to just have this DC as a DC.... and new exchange server running.. yes exchange.

I have installeed and set up exchange on new server and can recive mail to it =(from what i understand thats hardest part) btu problem is i cant send any email out externally... they just bounce... any one got any ideas? any help would be appreciate as mento be migrating over to the new server this weekend!!

Thanks

Lewis
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lewissowerby
Asked:
lewissowerby
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1 Solution
 
xqsCommented:
What is the bounce message?
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lewissowerbyAuthor Commented:
Here is the full message:


The following recipient(s) could not be reached:
 
      Mohsen Dehkordy ( Home ) on 14/07/2006 12:14
            There was a SMTP communication problem with the recipient's email server.  Please contact your system administrator.
            <lukpc95.lhasalimited.org #5.5.0 smtp;553-you are trying to use me [server-14.tower-140.messagelab>


Thanks

Lewis
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xqsCommented:
This message means that the smarthost you configured to forward your messages to, doesn't allow your server to use it as forwarder and basically generates a relaying denied message.
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lewissowerbyAuthor Commented:
so do you think this is something to do with our firewall (PIX) as the smarthost is pointed to the firewall IP address.. could it be that the firewall is only translatting the old exchnage server 66 rather than 95 as well?

Thanks

Lewis
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xqsCommented:
I'm not too familiar with PIX firewall configuration, but you should make sure that the firewall allows your new exchange server to use it as a relay if you have configured that as a smarthost indeed.
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kristinawCommented:
the last time i used pix, granted it was a couple of years ago, but last i checked it's a firewall, not a mail server.

i don't see how anything is working if we're setting the pix up as a smarthost.

per this, [server-14.tower-140.messagelab], do you guys use messagelabs for inbound/outbound?

kris.
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lewissowerbyAuthor Commented:
were not using the pix as the smarthost were using the pix as a firewall.. pointing our smarthost (messagelabs) to our external IP (our pix IP) then the pix translates to the required server at our end.

It was due to the pix firewall i belive.
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kristinawCommented:
so, that means you got it fixed then?

kris.
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