fedora

The problem is our mail sent through ActionMailer takes 60 seconds, and It effect to Task Management System. Coz the system gonna send mail every event that happen. like Create new task, Update task logs.

I google and found cause

sendmail always waits for 60 seconds when your hostname is not a FQHN (fully qualified host name). And It will asume a temporary DNS lookup failure and try again (while actually sending out the mail, strangely enough).

just edit /etc/sysconfig/network HOSTNAME=yourdomain.something