How to debug warning: SASL authentication failure: could not verify password?

[email protected]
Newsgroups gmane.comp.security.cyrus.sasl
Message-ID <[email protected]>
I've been having an issue sending emails and have looked online for the past few weeks and while I have learned a lot I still haven't been able to resolve my issue.  Any help would be greatly appreciated.

I'm able to receive emails but I'm unable to send email. I do not understand why the log states 'password matches successfully' and 'Authenticated' then reports 'SASL authentication failure: could not verify password'.

Log partial:
Sep 22 03:03:07 example.com authdaemond: [ID 702911 mail.debug] received auth request, service=smtp, authtype=login
Sep 22 03:03:07 example.com authdaemond: [ID 702911 mail.debug] authshadow: trying this module
Sep 22 03:03:07 example.com authdaemond: [ID 702911 mail.debug] authshadow: sysusername=tester01-example, sysuserid=<null>, sysgroupid=1003, homedir=/home/example.com/homes/tester01, address=tester01-example, fullname=Tester, maildir=<null>, quota=<null>, options=<null>
Sep 22 03:03:07 example.com authdaemond: [ID 702911 mail.debug] authshadow: clearpasswd=<null>, passwd=x
Sep 22 03:03:07 example.com authdaemond: [ID 702911 mail.debug] password matches successfully
Sep 22 03:03:07 example.com authdaemond: [ID 702911 mail.info] Authenticated: sysusername=tester01-example, sysuserid=<null>, sysgroupid=1003, homedir=/home/example.com/homes/tester01, address=tester01-example, fullname=Tester, maildir=<null>, quota=<null>, options=<null>
Sep 22 03:03:07 example.com authdaemond: [ID 702911 mail.info] Authenticated: clearpasswd=hidden_clear_password, passwd=hidden_encrypted_password
Sep 22 03:03:07 example.com postfix/smtpd[16860]: [ID 947731 mail.warning] warning: SASL authentication failure: could not verify password

I've set my log levels to:
/opt/local/etc/postfix/main.cf
smtpd_tls_loglevel = 3

/opt/local/etc/authlib/authdaemonrc
DEBUG_LOGIN=7

/opt/local/etc/sasl2/smtpd.conf
log_level: 7

Why would it report it as 'password matches successfully' and 'Authenticated' then report 'SASL authentication failure: could not verify password'?
lmpx.com only provides a reader for public news (NNTP) servers. It is not affiliated with the servers or forums shown here and is not responsible for the content of articles, which is written by their respective authors.