[SOLVED] SMTP Auth on Ubuntu with Postfix Problem

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Problem: postfix/smtpd[12563]: warning: unknown[192.168.1.126]: SASL PLAIN authentication failed: authentication failure
Solution: Change the line that says

MECHANISMS="pam"

in /etc/default/saslauthd to

MECHANISMS="shadow"

Problem: postfix/smtpd[16619]: warning: SASL authentication failure: Password verification failed
Solution: Change /etc/init.d/saslauthd line from

PIDFILE=$RUN_DIR/saslauthd.pid

to

PIDFILE="/var/spool/postfix/var/run/${NAME}/saslauthd.pid"

and set ownership to group sasl then put ther user postfix in group sasl

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