Of course, spammers will always be able to do that on the server, but I wonder if there is a way for qmail to avoid the message to bounce to the postmaster email box.What could I do to prevent this ?
find an alternative to the SMTP protocol that prevents this and is in widespread use.
The fact that those messages are processed by qmail increase the load a lot.
What could I do so that Qmail will not process those emails ?
Thank you,
Sébastien