Hi. What the problem and how to fix ?
My custom template:

PTR is correct:

UPD: My PTR record was not correct
[TABLE]
[TR]
[TD]
2023-12-26T10:08:02.347299+03:00 Valdor postfix/smtpd[2737341]: connect from autodiscover.3l.ru[10.2.3.2]
2023-12-26T10:08:02.354195+03:00 Valdor postfix/smtpd[2737341]: 566BC181E88: client=autodiscover.3l.ru[10.2.3.2]
2023-12-26T10:08:02.356481+03:00 Valdor postfix/cleanup[2737791]: 566BC181E88: message-id=<0ca7aa8b47961d197b39e38edf8886f0@swift.generated>
2023-12-26T10:08:02.358186+03:00 Valdor postfix/qmgr[2737315]: 566BC181E88: from=<service_noreply@3l.ru>, size=200557, nrcpt=1 (queue active)
2023-12-26T10:08:02.359249+03:00 Valdor postfix/smtpd[2737341]: disconnect from autodiscover.3l.ru[10.2.3.2] ehlo=2 starttls=1 mail=1 rcpt=1 bdat=1 quit=1 commands=7
2023-12-26T10:08:02.408723+03:00 Valdor pmg-smtp-filter[2738057]: 182493658A7BD261F4A: new mail message-id=<0ca7aa8b47961d197b39e38edf8886f0@swift.generated>#012
2023-12-26T10:08:02.482827+03:00 Valdor postfix/smtpd[2737406]: connect from localhost.localdomain[127.0.0.1]
2023-12-26T10:08:02.484129+03:00 Valdor postfix/smtpd[2737406]: 762CE1824C7: client=localhost.localdomain[127.0.0.1], orig_client=autodiscover.3l.ru[10.2.3.2]
2023-12-26T10:08:02.485960+03:00 Valdor postfix/cleanup[2737798]: 762CE1824C7: message-id=<0ca7aa8b47961d197b39e38edf8886f0@swift.generated>
2023-12-26T10:08:02.530385+03:00 Valdor postfix/qmgr[2737315]: 762CE1824C7: from=<service_noreply@3l.ru>, size=200762, nrcpt=1 (queue active)
2023-12-26T10:08:02.530460+03:00 Valdor postfix/smtpd[2737406]: disconnect from localhost.localdomain[127.0.0.1] ehlo=1 xforward=1 mail=1 rcpt=1 data=1 commands=5
2023-12-26T10:08:02.530525+03:00 Valdor pmg-smtp-filter[2738057]: 182493658A7BD261F4A: accept mail to <vadim@sysmaster.ru> (762CE1824C7) (rule: default-accept)
2023-12-26T10:08:02.531520+03:00 Valdor pmg-smtp-filter[2738057]: 182493658A7BD261F4A: processing time: 0.128 seconds (0, 0.067, 0)
2023-12-26T10:08:02.531682+03:00 Valdor postfix/lmtp[2738083]: 566BC181E88: to=<vadim@sysmaster.ru>, relay=127.0.0.1[127.0.0.1]:10023, delay=0.18, delays=0/0/0.04/0.13, dsn=2.5.0, status=sent (250 2.5.0 OK (182493658A7BD261F4A))
2023-12-26T10:08:02.531806+03:00 Valdor postfix/qmgr[2737315]: 566BC181E88: removed
2023-12-26T10:08:02.801051+03:00 Valdor postfix/smtp[2737409]: 762CE1824C7: enabling PIX workarounds: disable_esmtp for pochta.mtw.ru[37.228.88.78]:25
2023-12-26T10:08:23.340484+03:00 Valdor postfix/smtp[2737409]: 762CE1824C7: host pochta.mtw.ru[37.228.88.78] said: 450 4.7.1 Client host rejected: cannot find your hostname, [62.152.63.201] (in reply to RCPT TO command)
2023-12-26T10:08:23.348108+03:00 Valdor postfix/smtp[2737409]: 762CE1824C7: enabling PIX workarounds: disable_esmtp for pochta.mtw.ru[37.228.88.80]:25
2023-12-26T10:08:23.404748+03:00 Valdor postfix/smtp[2737409]: 762CE1824C7: to=<vadim@sysmaster.ru>, relay=pochta.mtw.ru[37.228.88.80]:25, delay=21, delays=0.05/0/21/0.05, dsn=4.7.1, status=deferred (host pochta.mtw.ru[37.228.88.80] said: 450 4.7.1 Client host rejected: cannot find your hostname, [62.152.63.201] (in reply to RCPT TO command))[/TD]
[/TR]
[/TABLE]
My custom template:

PTR is correct:

UPD: My PTR record was not correct
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