It takes ~15 seconds to send single e-mail using sendmail.
Jul 31 09:52:42 piotr-probook sendmail: My unqualified host name (piotr-probook) unknown; sleeping for retry
127.0.0.1 piotr-probook localdev localhost 192.168.1.1 router
# hosts file (normally /etc/hosts) O HostsFile=/etc/hosts
Obviously I can ping
piotr-probook host and HTTP server popups in browser when i type url
What am I doing wrong? How to fix the problem?