postfix/smtpd[5347]: warning: 10.64.217.190: hostname test.sales.example.com verification failed: Name or service not known
Issue
- What does the following log mean in maillog?
postfix/smtpd[5347]: warning: 10.64.217.190: hostname test.sales.example.com verification failed: Name or service not known
Environment
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
- postfix
Subscriber exclusive content
A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.