re Flako, thanks for help
No one is of servers are doind spam. I added them because they are static ip adsl of customer and the server is only for this customer, server only has 2 domain, tecnoretail for testing pourposes and the customer domain , so i'm really sure no spam and i checked server logs and no spaming
any ideas? some one said me i have to check HELO, PTR , DNS and so, but i checked and i don't see nothing strange
I checked sorbs and many others and no blacklisted:
[188.8.131.52] was not found in the SORBS database.