How does Yandex mail determine a green or gray lock?

Question

Domain Name System

How does Yandex determine a green or gray lock?
DKIM and Yandex and the server are present, they pass the test, all pass

php.ini

sendmail_path = "/usr/sbin/sendmail -t -i -f [email protected]"

Changing the sender does not affect, it just looks beautiful when the sender matches the signature

Any of the users actually exists at Yandex , however, the third one is generally specified in php, in fact, any mailbox from this domain will do, and this also does not affect if you write info, it will also be without changes, if you register sale, nothing will change either.

CSN

# cat pri.donmate.ru
$TTL 3600
@ IN SOA ns1.ks05.ru. viktor.7877796.ru. (
2019022809 ; serial, todays date + todays serial #
7200 ; refresh, seconds
540 ; retry, seconds
604800 ; expire, seconds
86400 ) ; minimum, seconds
;
donmate.ru. 3600 A 95.216.36.253
opt 3600 A 83.166.240.4
www 3600 A 95.216.36.253
donmate.ru. 3600 MX 10 mx.yandex.net.
donmate.ru. 3600 NS ns1.ks05.ru.
donmate.ru. 3600 NS ns2.ks05.ru.
95.216.36.253.in-addr.arpa 3600 PTR donmate.ru
default._domainkey.donmate.ru. 3600 TXT "v=DKIM1; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtDlmui48x2n262pkZLNqtEBeVhgEvrhnrfeBlh57icE/1T2EGapn/fHQpw5BYMFElXBk7qlBcww/FEP8+w9F7xgfXfoK6NFx2qACke6o8fBvGd5kI4IbUqj1QBGssR9r9Wwq4LKFIBS82Y16hItNFZ5FcT4nO/bZBK7z+MkiFv88u2X7ujgf6iv3pQmXO430T4J" "3YBBFV4gc8/MazK7nHRlnqOR+BHb6pnP5fwttFA7WhBQ9cEZ/fSLIOgbGhl/S1uN2HyZQfjOLj2suKFUW25yFwWnZB1KmZe57SLGUPID3dst0UOoyXGMEvOVUSv7NieaIyDxkeVc4jj3BqzyNkwIDAQAB"
donmate.ru. 3600 TXT "v=spf1 ip4:95.216.36.253 ip4:95.216.104.125 include:_spf.yandex.net include:_spf.spf.mail.ru include:spf.unisender.com ~all"
donmate.ru. 3600 TXT "spf2.0/mfrom,pra include:senderid.unisender.com ~all"
ks._domainkey.ks05.ru. 3600 TXT "v=DKIM1; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCvJP4IfF2uzyWjWm44oS2JWitIaQi7xJCMHeH6NjtUDMyR5txYkZ7XGbFMov0SK26dY4aZiB4vB3VYeqXF/TXJ/fNULFdFAb2QjOF2FVdZrmT7nD1+N5/qW0UMAiXqf6IZWg9c9kPctjCa94veEi6kpt9CwMYCeH6KuUvi8JCH6QIDAQAB"
mail._domainkey 3600 TXT "v=DKIM1; k=rsa; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDDqPiGKzqakbVemZHEwubznQExJxFwpEvZBMsZ3skY6f+kv6JLEkZqSGNokljHbHPqNI8Lf62wlxQNlYjIr7PdKONbLIVNP+4Y92oZu57xjZ1i80vHj77owwZi4mrzDV56iLkMReZQZFQAnNyiLINAP++ThnE96+TCPoi9mWAHwQIDAQA"
us._domainkey.donmate.ru. 3600 TXT "k=rsa\; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDHM8f7wBtrLLJ61hfjekzPwdRFT8XBfW3O8QO9jQBpe4PF4l8rQ2nDqrv93h7w5CfZL6pN6e/Ao0IfPL48zjkppufkygOzxbXqVyGeUoz2T16KF9xHm9H/9ijXGtviydsHYJRUpkx+toC4JW+4O59mQNSazHw7vivEtBWP+IAjuwIDAQAB"
_dmarc.donmate.ru. 3600 TXT "v=DMARC1; p=none"

Letter with brown padlock

by mxfront2o.mail.yandex.net with LMTP id plNQpMcz
for ; Tue, 5 Mar 2019 14:44:14 +0300
Received: from ks05.ru (ks05.ru [95.216.36.253])
by mxfront2o.mail.yandex.net (nwsmtp/Yandex) with ESMTPS id lnh8art9mc-iEFOMbaI;
Tue, 05 Mar 2019 14:44:14 +0300
(using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits))
(Client certificate not present)
Return-Path: [email protected]
X-Yandex-Front: mxfront2o.mail.yandex.net
X-Yandex-TimeMark: 1551786254.068
Authentication-Results: mxfront2o.mail.yandex.net; spf=pass (mxfront2o.mail.yandex.net: domain of donmate.ru designates 95.216.36.253 as permitted sender, rule=[ip4:95.216.36.253]) [email protected]; dkim=pass [email protected]
X-Yandex-Spam: 1
X-Yandex-Fwd: NjI2NDEwMzQxMDAwODk2MzI4NywxMjM5ODQ4OTkwODA2MzU5NDMxOQ==
Received: from localhost (localhost.localdomain [127.0.0.1])
by ks05.ru (Postfix) with ESMTP id CBEAAF01F96
for ; Tue, 5 Mar 2019 14:44:13 +0300 (MSK)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=donmate.ru; h=
date:date:message-id:x-mailer:from:from:subject:subject; s=
default; t=1551786252; x=1553600653; bh=frcCV1k9oG9oKj3dpUqdJg1P
xRT2RSN/XKdLCPjaYaY=; b=K53bt26Tqh2yFBwPtK9t4UxrAZyJ/vNvexbxpDY9
wnTad9iVPK+/UUwV0sgnXXE82w12wN6mcXbcZGnUziNAK4k62wqeGm2ewYzKjDLM
vhx0qbfuPNaESyv5CugaN7R5q+i4+MnHW0r/0oZl9JvhsmYskBuu1vHbxpL070Ru
yQJQlvsXma2LjWJz9sx66Ikcx/J+1obxkvClpkXMcLrBbWee9TPFvDFly7H1z2jH
AFQoPmwFndXkWcmj4bOFvi+AlRzerthpohPPvYrEcMKHbOLueTYDtweq2rtxy2r3
GxVhtaOtryldRWq34mXtU3D+lA7jTbe8L/9aDQJto6cjHA==
X-Virus-Scanned: Debian amavisd-new at ks05.ru
Received: from ks05.ru ([127.0.0.1])
by localhost (ks05.ru [127.0.0.1]) (amavisd-new, port 10024)
with ESMTP id fe-KLQtkmvXP for ;
Tue, 5 Mar 2019 14:44:12 +0300 (MSK)
Received: by ks05.ru (Postfix, from userid 5025)
id 08C5FF01F8F; Tue, 5 Mar 2019 14:44:11 +0300 (MSK)
To: [email protected]
Subject: the subject
X-PHP-Originating-Script: 0:mail.php
From: [email protected]
X-Mailer: PHP/7.0.32-2+0~20181015120817.7+stretch~1.gbpa6b8cf
Message-Id: <[email protected]>
Date: Tue, 5 Mar 2019 14:44:11 +0300 (MSK)
X-Yandex-Forward: 107bce4f08bc9bf13e66c15aa5ddb76a

Letter with green padlock

Received: from mxfront5o.mail.yandex.net ([127.0.0.1])
by mxfront5o.mail.yandex.net with LMTP id kX5h5TAy
for ; Tue, 5 Mar 2019 14:45:15 +0300
Received: from ks05.ru (ks05.ru [95.216.36.253])
by mxfront5o.mail.yandex.net (nwsmtp/Yandex) with ESMTPS id 9Ub15S8S14-jDOqsZ7b;
Tue, 05 Mar 2019 14:45:13 +0300
(using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits))
(Client certificate not present)
Return-Path: [email protected]
X-Yandex-Front: mxfront5o.mail.yandex.net
X-Yandex-TimeMark: 1551786313.924
Authentication-Results: mxfront5o.mail.yandex.net; spf=pass (mxfront5o.mail.yandex.net: domain of donmate.ru designates 95.216.36.253 as permitted sender, rule=[ip4:95.216.36.253]) [email protected]; dkim=pass [email protected]
X-Yandex-Spam: 1
X-Yandex-Fwd: NjI2NDEwMzQxMDAwODk2MzI4NywxMjM5ODQ4OTkwODA2MzU5NDMxOQ==
Received: from localhost (localhost.localdomain [127.0.0.1])
by ks05.ru (Postfix) with ESMTP id A45CFF01FBD
for ; Tue, 5 Mar 2019 14:45:13 +0300 (MSK)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=donmate.ru; h=
date:date:message-id:x-mailer:from:from:subject:subject; s=
default; t=1551786311; x=1553600712; bh=frcCV1k9oG9oKj3dpUqdJg1P
xRT2RSN/XKdLCPjaYaY=; b=kFbjXjVPejGxtYbUIhf9IpXTf+XMoRjv1XA9cZQy
iEuK/6+t1YhBk5TQjegQvxdDhZgK7TA1qk9fW0lwniX+n/t6/2ns2He7HxAuZ6as
ETYhvTkzT29bfsZ3sVV3WqgmUvnsS0YwqoTrFARVN6ZbqCnHQsxE05aTodJ4OSso
GpGXyxaXiIiSA+p1tj3h1vBgCkkJRBThdOomeWhetkbjQbIyUQA5rYgytxyb0dgz
3U+zkJSxHT0FKwx9ua5WzYCmiajGAw2SfR9fYM+rYyzD5t7WBvAPRgQtafxrRnVw
FRpCw53Oq7ThBWOH3bZAqIzOsdJummzVpYlK8sCWu9oDlw==
X-Virus-Scanned: Debian amavisd-new at ks05.ru
Received: from ks05.ru ([127.0.0.1])
by localhost (ks05.ru [127.0.0.1]) (amavisd-new, port 10024)
with ESMTP id OkdB6XtRNC1Q for ;
Tue, 5 Mar 2019 14:45:11 +0300 (MSK)
Received: by ks05.ru (Postfix, from userid 5025)
id E1A49F01FC4; Tue, 5 Mar 2019 14:45:11 +0300 (MSK)
To: [email protected]
Subject: the subject
X-PHP-Originating-Script: 0:mail.php
From: [email protected]
X-Mailer: PHP/7.0.32-2+0~20181015120817.7+stretch~1.gbpa6b8cf
Message-Id: <[email protected]>
Date: Tue, 5 Mar 2019 14:45:11 +0300 (MSK)
X-Yandex-Forward: 107bce4f08bc9bf13e66c15aa5ddb76a

Answer 1

So it is written, apparently, the [email protected] address has an accumulated reputation or it has passed manual validation, the [email protected] address is obviously newer.

Answer 2

[gray] sender verified
Most likely, you've been sending emails from this domain recently, or users have reported your emails as spam. For them to be marked with the [green] icon, more time should pass and there should be fewer complaints about your letters.