Note: This article has the reference to the issue with the fix available:
- #PPPM-6939 "Under certain circumstances, Postfix failed to resolve short system email aliases,
such as “root” or “postmaster”, which resulted in emails being rejected with message
“Unable to get sender domain by sender mailname”."
Fixed in:- Plesk Onyx 17.5.3 Update 23 25 September 2017 (Linux)
Please consider updating your server:
Symptoms
-
DMARC is enabled at Plesk > Tools & Settings > Mail Settings
-
When the message is rejected, there are entries in /var/log/maillog:
CONFIG_TEXT: srv1 spf[10240]: SPF result: fail<...>
srv1 dmarc[10246]: DMARC: REJECT message for user@example2.com<...>
srv1 postfix/smtp[10256]: 663B65D9FB: to=user@example.com, relay=mx.example.com[54.148.200.182]:25, delay=2.6, delays=0/0.02/2.1/0.4, dsn=2.0.0, status=sent (250 2.0.0 Ok: queued as 20E631E1A31A7) -
Trying to send an email using sendmail, the following error appears in
/var/log/maillog:CONFIG_TEXT: Unable to get sender domain by sender mailname
Cause
This issue has been considered as Plesk bug #PPPM-6939
Resolution
Update Plesk to the latest version as suggested in this article.
Comments
1 comment
Bug #PPPM-6939 have been fixed in Plesk Onyx 17.5.3 Update 23
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