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I am not receiving delivery failure notifications of non-received emails

Hello Experts, could you please help with the following problem:

I am not receiving delivery failure notifications of non-received emails

I am using Outlook 2007 configured for IMAP.

I am using Windows 8.1.

I have set up delivery receipts, read receipts, and enabled logging.

I am receiving delivery receipts and read receipts.

Even test emails sent to bogus email addresses - eg: - do not bounce back as failed.

If you need any more info please let me know.

I appreciate any help you can offer.

Regards, Jon.

Spurr Classic Cars.
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It depends on destination server to reply back with failure or not. Now a days, most of mail admins disable this feature, so hackers cannot find the valid address.
NDR are part of RFC compliance last I checked and although they can be turned off I don't know about any reliable email provider That would do that.

The OP example wrote and I'm pretty sure they are enabled for Gmail.

@OP what is your mail server? Are you the Admin of it?
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Ok, thanks for your replies - so Amit says the feature is probably turned off, and Akhater says it should be turned on....... but it looks like it's a feature controlled by my recipient's server.

My server is:

My main website is

My email address is

This is all hosted by Freestart,

I am not the admin of the server.

Thanks for your replies so far - I'm going to do some more testing and ill let you know the results.

Send to a non-existent recipient do you receive an NDR? If you do then Amit is probably right
I am also testing, let me also share the result.
Here are the test result:

1) I sent a test mail from my hotmail account to gmail and i got below error: rejected your message to the following email addresses: (
The recipient's mailbox is full and can't accept messages now. Please try resending your message later, or contact the recipient directly.

2) Send test mail from my gmail to hotmail account and no bounce back came back.

3) I send test mail from my company account to my gmail account and got following message:
552-5.2.2 The email account that you tried to reach is over quota. Please direct

All said, one strange thing i found, in bounce back header message, i didn't see anywhere google server. Which mean, google is masking its server names and ip's.
To Malcom, you mentioned you are not the admin... maybe the admin is filtering the bounce back to his/her own email with a rule on the server.  

Why not ask the admin for help!!!???
Amit - it sounds like "" is a valid gmail account - it's just full : )

I have also now received an "undeliverable" message from "". This is in response to one of my test emails to a bogus gmail account. It was a few days late, but at least the gmail one is working.

After further discussions with my colleagues it transpires that most of the undelivered emails are invoices sent to our customers - so this may not be a technical issue anyway.

hecgomrec - I am the administrator of our email system  - which is Outlook set up on 2 PCs configured for IMAP. Our emails are hosted by Freestart, I am not the administrator of their email server. I have spoke to Freestart and they say they can't find any problems with their email server.

Thanks for the update. looks like i picked up valid address. I hope you have clarity now.
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