What is HTML markup?

Question

Email

0.8 HTML_IMAGE_RATIO_02 BODY: HTML has a low ratio of text to image area
 0.0 HTML_MESSAGE BODY: HTML included in message
 1.1 MIME_HTML_ONLY BODY: Message only has text/html MIME parts
 1.3 RDNS_NONE Delivered to internal network by a host with no rDNS
 1.2 INVALID_MSGID Message-Id is not valid, according to RFC 2822
 0.0 TO_NO_BRKTS_NORDNS_HTML To: misformatted and no rDNS and HTML only
 2.7 TVD_SPACE_RATIO_MINFP TVD_SPACE_RATIO_MINFP

I don't understand HTML. Can someone tell me what it is?
UPD: It looks like a mail filter. Something more.

Answer 1

Similar to the output of SpamAssassin or another spam analyzer.

Answer 2

Such a log gives out - www.mail-tester.com , just today I was looking for information and came across your question. :)

Answer 3

This is not markup, this is the log of some validator or parser.

Answer 4

This is part of the result of the e-mail audit performed by the "SpamAssassin" spam filter System with scores for each position (line). That's just the numbers at the beginning of each line are rounded to tenths and, most likely, were originally with a minus sign.
The larger the total number with a minus sign, the lower the email rating.