My emails are not working please check and hep me here are my log

Jun 15 17:02:00 vps106542 postfix/master[13765]: daemon started -- version 2.10.1, configuration /etc/postfix Jun 15 17:03:54 vps106542 postfix/postfix-script[14077]: refreshing the Postfix mail system Jun 15 17:03:54 vps106542 postfix/master[13765]: reload -- version 2.10.1, configuration /etc/postfix Jun 15 17:04:55 vps106542 postfix/pickup[14081]: DCC02222C2: uid=0 from=<info@mydomaincom> Jun 15 17:04:55 vps106542 postfix/cleanup[14187]: DCC02222C2: message-id=1497560695.14183@mydomain.com Jun 15 17:04:55 vps106542 postfix/qmgr[14082]: DCC02222C2: from=info@mydomain.com, size=622, nrcpt=1 (queue active) Jun 15 17:04:55 vps106542 postfix/smtp[14189]: fatal: specify a password table via the smtp_sasl_password_maps' configuration parameter Jun 15 17:04:56 vps106542 postfix/master[13765]: warning: process /usr/libexec/postfix/smtp pid 14189 exit status 1 Jun 15 17:04:56 vps106542 postfix/master[13765]: warning: /usr/libexec/postfix/smtp: bad command startup -- throttling Jun 15 17:05:40 vps106542 postfix/postfix-script[14328]: stopping the Postfix mail system Jun 15 17:05:40 vps106542 postfix/master[13765]: terminating on signal 15 Jun 15 17:05:40 vps106542 postfix/postfix-script[14401]: starting the Postfix mail system Jun 15 17:05:40 vps106542 postfix/master[14403]: daemon started -- version 2.10.1, configuration /etc/postfix Jun 15 17:05:40 vps106542 postfix/qmgr[14405]: DCC02222C2: from=<info@mydomain.com>, size=622, nrcpt=1 (queue active) Jun 15 17:05:40 vps106542 postfix/smtp[14407]: fatal: specify a password table via thesmtp_sasl_password_maps' configuration parameter Jun 15 17:05:41 vps106542 postfix/master[14403]: warning: process /usr/libexec/postfix/smtp pid 14407 exit status 1 Jun 15 17:05:41 vps106542 postfix/master[14403]: warning: /usr/libexec/postfix/smtp: bad command startup -- throttling Jun 15 17:06:41 vps106542 postfix/smtp[14478]: fatal: specify a password table via the `smtp_sasl_password_maps' configuration parameter Jun 15 17:06:42 vps106542 postfix/master[14403]: warning: process /usr/libexec/postfix/smtp pid 14478 exit status 1 Jun 15 17:06:42 vps106542 postfix/master[14403]: warning: /usr/libexec/postfix/smtp: bad command startup -- throttling