If you are just using SMTP relay to verify /validate are can you get exempt and gain access to port 25? Or can you verify through secure SMTP on ports 587 etc?
I'm using a pay as you go account, and Im wanting to install either cobisi email verify for .net or Kellerman .net library.
Is this possible? I will use Reverse DNS, PFK, DKIM, DMARC etc, Im verifying legit email.
Any help would be awesome!