Spam providing from internal IP addresses as 172.17.0.1?

[Thanatermesis (Elive Linux)]

The strange thing is that this email template seems to be duplicated in my settings, so I created another post topic for this issue:

Duplicated email templates with wrong contents

Is normal that I have duplicated templates in the email settings? This bug was found because the confirmation link of adding a second email allways returned a 404, then we found that many entries in the templates of email were wrong, so duplicated subjects with similar bodies, they seem to be old contents not replaced? On the email confirmation issue, I have one that uses a wrong (old?) link and another one that is the correct one, why I have 2 with the same name and why I cannot delete the wr…