user cannot send mail

as the log excerpt below shows, no user can login to postfix to send mail because it's trying to read usernames/passwords from /etc/sasldb2 which doesn't exist.

Dec 5 19:19:23 slimjim postfix/smtpd[8506]: warning: SASL authentication problem: unable to open Berkeley db /etc/sasldb2: No such file or directory
Dec 5 19:19:23 slimjim postfix/smtpd[8506]: warning: SASL authentication problem: unable to open Berkeley db /etc/sasldb2: No such file or directory
Dec 5 19:19:23 slimjim postfix/smtpd[8506]: warning: SASL authentication failure: Password verification failed
Dec 5 19:19:23 slimjim postfix/smtpd[8506]: warning: cpc1-rdng10-0-0-cust230.winn.cable.ntl.com[80.6.60.231]: SASL PLAIN authentication failed

Status: 
Closed (fixed)