Remove our e-mail from anti spam filters and add increase protection against incoming spam via e-mail

1) We must remove our IP address from spam lists like [login to view URL] that are preventing us from delivering ordinary e-mail messages to clients and other interlocutors; 2) At the same time, we receive a lot of spam (20 e-mails per day at least), mostly from Brazil and Vietnam. Please note that: a) Our server is located in Italy and our provider is Vodafone; b) Spam received from Vietnam may be in connection with the fact that I frequently travel there, having offices there; c) Even if I click on "unsubscribe" links, I keep on receiving the same messages; d) As for issue number 1 (removing us from spam lists), I have received instructions on how to do that from Trendmicro, but they go beyond my skills (see attached file). Thank you!