Maybe I have not read it correctly or I am just not understanding.  I need to make sure I understand the Check Valid Sender option in SMTP Security.  Here is my scenario:

 

I have users on My Network who would like to use another email address, but the other provider will not allow them to send mail through their server since they are on my network now.  Lets say their email is [EMAIL PROTECTED] and xyz.com is NOT hosted by me if they try to send Email through my server will it go since I have the Check Valid Sender box checked or will it get rejected since [EMAIL PROTECTED] is not a valid account on my server?

 

 

 

 

Thanks,

 

Kris

 

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