I am using FC6.
Please some one guide me to set the smart relay host for sendmail with auth..
I want to use use my rediffmailpro.com smtp server to relay the emails from the system.
I have set the SMART HOST in as smtp.rediffmailpro.com .
the email is trigged by email@example.com
I am sending the email to firstname.lastname@example.org
. In this case i am getting user unknown in the var/log/maillog.
I think the smtp server is checking who is sending the email ..ctladdress
Please help me..