2 Comments on “Which network service or protocol is used by sendmail for RBLs (Realtime Blackhole Lists)?”

1. sergiu says:

   June 9, 2016 at 3:22 pm

   E. is the correct answer

   
   
   
   1

   
   
   
   0
2. capslock says:

   May 13, 2017 at 5:28 am

   RBLs are also called DNS-based Blackhole Lists (DNSBL)

   
   
   
   2

   
   
   
   0