1000 FAQs, 500 tutorials and explanatory videos. Here, there are only solutions!
Spamtrap / Honeypot
If a message reaches one of these addresses, this means that it was collected manually (or via a spambot) and so must be spam. Double opt-in (validation of the recipient's address by e-mail) cannot possibly have occurred with such an address.
The servers used are immediately registered and blacklisted.
This is an extremely serious situation because none of our clients can then reach the majority of their regular correspondents.
The organisation does not remove the rogue e-mail server from its list until its owner demonstrates that action has been taken against the culprit.
Link to this FAQ: