sendmail client with AUTH

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http://www.unix.com – HI, I use redhat 5.7 . I configure sendmail as client and deliver the email to the external SMTP server( . The smtp server need SMTP AUTH in order to send email with SMTP. I configure and follow this link . Sendmail as SMTP Authentication | Free Linux Tutorials I try to send email using sendmail to this smtp server but failure with AUTH . [root@localhost asterisk]# sendmail -f [email protected] -v [email protected] subject:MMMM MMMM . [email protected].. Connecting to [] via relay... 220 KINGMANNB ESMTP >>> EHLO localhost.localdomain (HowTos)