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I have a ton of the following Invalid credential errors in /var/log/messages but not sure where or how to troubleshoot

Aug 26 14:52:53 hostname01 saslauthd[2756]: pam_ldap: error trying to bind as user "cn=first.last,ou=people,o=lpl" (Invalid credentials)

Aug 26 14:52:55 hostname01 saslauthd[2756]: do_auth : auth failure: [user=first.last] [service=smtp] [realm=] [mech=pam] [reason=PAM auth error]

Any guidance on this?

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Did something break recently, or are you trying to set it up for the first time? Is this a legitimate denial, or is the server rejecting a valid authentication request? Are you able to do an ldapsearch -D as that user from that machine? –  200_success Aug 26 '13 at 20:08

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