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With our Online Exchange I have found that if someone from the local domain sends an email to a secondary address within the domain it bounces even although external mail to the secondary address is correctly delivered to the primary address. 
 
To illustrate; 
 
An account has primary address: primary@domain_name and a secondary address of secondary@domain_name 
 
If someone with anyaddress@domain_name sends to secondary@domain_name they get a bounce message. &nbsp;However if anyone@another_domain sends to secondary@domain_name it correctly gets delivered to the primary address. 
 
Is this behaviour correct? Can it be changed?
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With our Online Exchange I have found that if someone from the local domain sends an email to a secondary address within the domain it bounces even although external mail to the secondary address is correctly delivered to the primary address.

To illustrate;

An account has primary address: primary@domain_name and a secondary address of secondary@domain_name

If someone with anyaddress@domain_name sends to secondary@domain_name they get a bounce message.  However if anyone@another_domain sends to secondary@domain_name it correctly gets delivered to the primary address.

Is this behaviour correct? Can it be changed?

'internal' mail to secondary email addresses bounce with Online Exchange

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