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Resolved Mail get lost with wrong Dmarc

Bernben

New Pleskian
Hey Pleskians!
We have a case, where a remote Mail user have a dmarc record as following:

$ dig txt _dmarc.domain.com +short "" "v=DMARC1"

This leads to an Error when a mail is sent to our Plesk server, the Mail is not bounced but also never delivered, and from the logs i would have assumed it got delivered, but it surely isn't.

I could reproduce the issue with an own domain on a remote server with false DMARC
$ dig txt _dmarc.wrongdmarc.com +short "v=DMARC1"
Here an example what happens with the mail from the log

root@plesk1 ~ # grep 2214E181522D59 /var/log/maillog Jun 23 09:35:30 plesk1 postfix/smtpd[32262]: 2214E181522D59: client=remoteHOst.com[] Jun 23 09:35:30 plesk1 psa-pc-remote[1083]: 2214E181522D59: from=<[email protected]> to=<[email protected]> Jun 23 09:35:30 plesk1 postfix/cleanup[13892]: 2214E181522D59: message-id=<[email protected]> Jun 23 09:35:30 plesk1 psa-pc-remote[1083]: 2214E181522D59: py-limit-out: stderr: INFO:__main__:No SMTP AUTH and not running in sendmail context (incoming or unrestricted outgoing mail). SKIP message. Jun 23 09:35:30 plesk1 psa-pc-remote[1083]: 2214E181522D59: py-limit-out: stderr: SKIP Jun 23 09:35:30 plesk1 psa-pc-remote[1083]: 2214E181522D59: check-quota: stderr: SKIP Jun 23 09:35:30 plesk1 psa-pc-remote[1083]: 2214E181522D59: spf: stderr: PASS Jun 23 09:35:30 plesk1 postfix/qmgr[22287]: 2214E181522D59: from=<[email protected]>, size=3191, nrcpt=1 (queue active) Jun 23 09:35:30 plesk1 postfix-local[31520]: 2214E181522D59: from=<[email protected]>, to=<[email protected]>, dirname=/var/qmail/mailnames Jun 23 09:35:31 plesk1 postfix-local[31520]: 2214E181522D59: spam: stderr: PASS Jun 23 09:35:31 plesk1postfix-local[31520]: 2214E181522D59: dk_check: stderr: PASS Jun 23 09:35:31 plesk1 dmarc[32149]: 2214E181522D59: Wrong the essential DMARC policy parameters for 'sysdev.online': 'Found DMARC record lacked a required p= entry' Jun 23 09:35:31 plesk1 dmarc[32149]: 2214E181522D59: DMARC: smtpdomain=sysdev.online maildomain=sysdev.online [email protected] stamp=1687505731 ip= adkim=unspecified aspf=unspecified p=UNSPECIFIED sp=UNSPECIFIED pct=100 align_dkim=fail align_spf=fail spfres=pass dkimres=pass dmarccheck=DMARC_POLICY_REJECT dmarcstatus=STOP Jun 23 09:35:31 plesk1 postfix-local[31520]: 2214E181522D59: dmarc: stderr: STOP Jun 23 09:35:31 plesk1 postfix/pipe[14080]: 2214E181522D59: to=<[email protected]>, relay=plesk_virtual, delay=22, delays=21/0/0/1.2, dsn=2.0.0, status=sent (delivered via plesk_virtual service) Jun 23 09:35:31 plesk1 postfix/qmgr[22287]: 2214E181522D59: removed
While the sender should improve their DNS, the mail should still get delivered, or at least bounced.
 
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