I sent out 3 emails containing about a  dozen email addresses using bcc.  Those 3 are  stuck in my Out box.  One of the emails that is stuck in my Out Box--I will subsequently get an error message (Ox800CCC79)) indicating the email address that is an invalid address.  The other two emails stuck in my Out box does not give me an error message at all; they just don't send.

Questtion #1 - Am I to assume none of these email addresses listed in the emails receive it???

Question #2 - I am unable to get rid of the error message when I attempt to send it again.

Question #3 - If I retype and resend the two blanket emails that do not give me an error message, indicating a certain email address that has an invalid mailbox, how do I know which address is giving me a problem and causing the whole email not to send.

We are seeing odd behavior for emails sent to our on-premises Exchange 2013 server.

Mails sent from Outlook.com with at least one invalid address on the To field are bouncing back to the sender as undeliverable to all addresses...even the valid ones, and the valid recipients do not receive the email.  The same mail sent from Gmail does bounce back indicating that it could not be delivered to the recipient and the valid recipient(s) do get the emails.

The SMTP protocol logs for both are below.  Any idea why the behavior would differ?  Note:  This is causing issues for us as emails from Microsoft employees behave the same way.

From what I can see in the logs, it looks like the problem is that Outlook.com is using the same SessionID for both recipients, so when the User unknown goes back it has no way of knowing which recipient was invalid and the mail is rejected for all senders.

I could be wrong, but this seems like a fundamental problem with how Outlook (and as a result...Microsoft as a whole) is sending mails.


I keep getting this message and another.  5.5.0 invalid address.  I know what i did wrong, but now every time i hit send and receive, I get the 2 errors.  Everything seems to work, but I want to stop getting the errors.  How do I delete the original e-mail that has the wrong address or domain name?
Thanks, Peter

How do I resent my hotmail account that was temporarily blocked when the code reset was sent to an email address that is no longer valid??  Please help me I am in desparate need of some emails in that other account.  I have opened a new hotmail account but would like to merge the two.

 

thanks, cspikes