OUR INCOMING SMTP SERVERS STRICTLY REQUIRE THE USE OF TLS 1.3, AND A VALID FORWARD-CONFIRMED REVERSE DNS ENTRY FOR THE CONNECTING IP ADDRESS.
TO SUCCESSFULLY SEND E-MAIL TO US, YOU WILL NEED TO ENSURE THAT YOUR OUTGOING SMTP SERVER IS CORRECTLY CONFIGURED TO MEET BOTH OF THESE REQUIREMENTS.
IPv4 AND IPv6 ARE BOTH SUPPORTED.