Here is the errors I got
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An unexpected failure occurred
0x1 (Operations error; 00000000: LdapErr: DSID-0C090627, comment: In order to perform this operation a successful bind must be completed on the connection., data 0, vece): searching: (&(objectClass=user)(sAMAccountName=khoa.phan))
host=192.168.199.2,port=3268,username=,password=*****,useStartTls=0,useSsl=0,bindRequiresDn=0,accountCanonicalForm=4,allowEmptyPassword=0,optReferrals=0,baseDn=cn=%s,dc=pyco,dc=vn,accountDomainName=pyco.vn,accountDomainNameShort=pyco,accountFilterFormat=
/var/www/html/usvndev/library/Zend/Ldap.php(987): 0x1 (Operations error; 00000000: LdapErr: DSID-0C090627, comment: In order to perform this operation a successful bind must be completed on the connection., data 0, vece): searching: (&(objectClass=user)(sAMAccountName=khoa.phan))
#0 /var/www/html/usvndev/library/Zend/Ldap.php(666): Zend_Ldap->search('(&(objectClass=...', 'cn=%s,dc=pyco,d...', 1, Array) #1 /var/www/html/usvndev/library/Zend/Ldap.php(538): Zend_Ldap->_getAccount('khoa.phan', Array) #2 /var/www/html/usvndev/library/Zend/Ldap.php(605): Zend_Ldap->_getAccountDn('khoa.phan@pyco....') #3 /var/www/html/usvndev/library/Zend/Auth/Adapter/Ldap.php(329): Zend_Ldap->getCanonicalAccountName('khoa.phan@pyco....', 1) #4 /var/www/html/usvndev/library/Zend/Auth.php(117): Zend_Auth_Adapter_Ldap->authenticate() #5 /var/www/html/usvndev/app/controllers/LoginController.php(73): Zend_Auth->authenticate(Object(USVN_Auth_Adapter_Ldap)) #6 /var/www/html/usvndev/app/controllers/LoginController.php(32): LoginController->_doLogin() #7 /var/www/html/usvndev/library/Zend/Controller/Action.php(513): LoginController->loginAction() #8 /var/www/html/usvndev/library/Zend/Controller/Dispatcher/Standard.php(295): Zend_Controller_Action->dispatch('loginAction') #9 /var/www/html/usvndev/library/Zend/Controller/Front.php(954): Zend_Controller_Dispatcher_Standard->dispatch(Object(USVN_Controller_Request_Http), Object(Zend_Controller_Response_Http)) #10 /var/www/html/usvndev/public/index.php(5): Zend_Controller_Front->dispatch() #11 {main}
khoa.phan@pyco.vn authentication failed: 0x1 (Operations error; 00000000: LdapErr: DSID-0C090627, comment: In order to perform this operation a successful bind must be completed on the connection., data 0, vece): searching: (&(objectClass=user)(sAMAccountName=khoa.phan))
Could you please provide some more information? Especially I'd need the configuration you use and some code snippet that shows your code setup.
I'm currently quite unsure where that limitation might come from.