internet is 3,970,693,888
inbound smtp hosts are 13,427,404
iprev are 4,748,264
unique iprev are 4,737,722
no ssl are 3,988,657
wrong CN/SAN are 512,806
iprev CN/SAN are 246,801
valid chains are 167,034
0.34% of the public network listens on port 25/tcp - 13427404 out of 3970693888
35.36% of the smtp servers are full-circle reverse DNS - 4748264 out of 13427404
0.22% of those iprev hosts are multi-homed (round-robin) - 10542 out of 4748264
16.00% of full-circle hosts talk SSL/STARTTLS - 759607 out of 4748264
32.49% of SSL-enabled hosts advertise an iprev subject alternative name - 246801 out of 759607
67.68% of SAN hosts have a valid certificate chain - 167034 out of 246801
IPREV PTRs 4,737,722
Deferenced domains 976,781
MX records 632,793
Total results for enforce check 585,638
Unreachable MXen 104,381
No STARTTLS 132,386
Offers STARTTLS 334,501
Enforces STARTTLS 628
Trusted certificate chain 163,733 (ok)
Cipher is (NONE) 123,388 (ok)
From the future 28 (certificate is not yet valid)
Expired 28,389 (certificate has expired)
Self-signed 61,894 (self signed certificate)
Self-signed CA 6,687 (self signed certificate in certificate chain)
Untrusted certificate chain 478 (unable to get local issuer certificate)
Invalid certificate 53,874 (unable to verify the first certificate)
Wrong purpose certificate 499 (unsupported certificate purpose)
TLSA records 1,746
Valid PKIX/DANE-EE 1,387
Valid PKIX/DANE-TA 103
64.00% of deferenced domains have an MX record
25.00% of MX certificates are valid
19.00% of MX end-points do not offer STARTTLS
4.00% of MX certificates are expired
9.00% of MX certificates are self-signed
0.00% of MX certificates are private
8.00% of MX certificates are invalid
0.00% of MX end-points have a DANE record
0.00% of MX end-points validating DANE (trusted, private and self-signed)