Are NDN's Fake?

[AkumaX]

 

[her209]

Non-Deliverable Nudes?

 

[bandana163]

Google image search turned up pictures of Next Door Nikki.

 

[Malak]

 

[bandana163]

In case you were asking about someone's breasts: they are real.
In case you were asking about a stock called NDN: don't invest at this point of time.
In case you were asking about the phenomena "NDN": they are coming for you.
In case you'ra a fanboy of the band "NDN":
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.
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[Zenmervolt]

Non-Delivery Notifications?

Yes and no. They can be legitimately generated when an E-mail that you send does not get through the mailserver on the other end. HOWEVER, they are very often spoofed as a means of propagation for computer viri.

ZV