gethostbyname failed for Arduino Name or service not knownCannot find my own host in hosts database to qualify it! Trying to continue with unqualified hostname. DO NOT report broken Received: headers, HELO/EHLO lines or similar problems! DO repair your /etc/hosts, DNS, NIS or LDAP instead.Arduino is the hostname of my Arduino Yun (it is the name you can choose on the Arduino's web-interface). For now I got this message to disappear by changing the content of /etc/hosts from
127.0.0.1 localhost 127.0.1.1 Arduinofetchmail also suggested to add sslcertck to the setup (I think this is more strict). So I did add this to the .fetchmailrc file.