hi frieds i have mail server on linux my mail server generate spam mail how to avoid this spamming the spam mail will come from external globval network i thaught that my server any port is opren how to secure my mail server
hi frieds i have mail server on linux my mail server generate spam mail how to avoid this spamming the spam mail will come from external globval network i thaught that my server any port is opren how to secure my mail server