I'm developing a small reporting tool to find worst abusers and spammers that hit our server. Then after a human analisys we do a SMTP blocking by e-mail or EHLO domain.
But....
We need to manually add one by one.
At Security>Advance Settings >SMTP Blocking>New Would be great to have a choice to add a list domains (one per line) like domain admins have on Trusted Senders.
I even take a look at webservices API, but don't find anything related to SMTP Blocking.