And if you cannot dump the traffic, on the server with MySQL server, you can indeed activate MySQL logging
In my.cnf file (on Debian /etc/mysql/my.cnf), add the following lines general_log_file = /var/log/mysql/mysql.log general_log = 1 (in Debian just un-comment it) Then re-try and take a look into the log file /var/log/mysql/mysql.log -----Original Message----- From: Todor Petkov [mailto:z...@online.bg] Sent: jeudi 25 octobre 2012 09:22 To: vchkpw@inter7.com Subject: Re: [vchkpw] vchkpw auth remote database On 10/25/2012 10:17 AM, kengheng wrote: > Hi, I've grant the privilege to user@vpopmailhost, however the > vpopmail behaviour as below: > > vuserinfo can query the user result > > however,when run vchkpw for smtp-auth, it return the err msg as below: > vchkpw-submission: vpopmail user not found > t...@abc.com:<email_client_ip> > > On 10/23/12 11:07 PM, Thibault Richard wrote: >> vuserinfo only make a SELECT, that why I asked for other rights >> Can you dump the traffic between the mail server and mysql? I guess it will be easier than to start mysql with logging and see queries from other clients. Otherwise the problem is quite strange.. !DSPAM:5088edd434171808015294!