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Prevent Exchange Ip address from being when emails get rejected

hi
 
 When a user send email to any of our users we are getting the following error

[192.168.10.50] #<[192.168.10.50] #5.7.1 SMTP; 550 5.7.1 550 Message rejected because SPF check failed> #SMTP#

How can I prevent from the Exchange Server ip address 192.168.10.50 be sent to the external user.

thanks
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CBB
Asked:
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1 Solution
 
browningitSysadminCommented:
Can an admin please remove the comment above, I was still logged in as the old user above unintentionally.

Just so we still have my answer in the thread:

Hi there,

This link here should walk you through it:

http://exchangepedia.com/2008/05/removing-internal-host-names-and-ip-addresses-from-message-headers.html

It also details some of the security talk behind making a change of this nature.

Cheers,
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CBBNet AdminAuthor Commented:
Thanks should I open another case on how to resolve the error
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browningitSysadminCommented:
I would, as they are indeed separate questions.

I would use some of the online tools for record checking to walk you through configuration details for SPF records available here:

http://mxtoolbox.com/spf.aspx

Cheers,
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CBBNet AdminAuthor Commented:
The solution worked just find
Need to run get-sendconnector to see the name

thanks
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