I have searched for two days trying to figure out why I keep getting this
error. I am using vpopmail 5.4.30 and mysql 5.0.77-4 on CentOS 5.4


I can reproduce the error by restarting the mysql server. The only way to
make it work after restarting mysql is to also restart authdaemond.


I did find some info on the mailing list that says:


To describe the problem: when you run vpopmail in MySQL mode, with
courier-authdaemond and MySQL v5.0 or later, you will find that for the
first 8
hours, everything works just fine, but after 8 hours, nobody will be able to
authenticate to the email server and you will see "MySQL server has gone
errors in the maillog.
The cause of the problem is that in MySQL 5.0 (and probably some 4.1
MySQL implements a new timeout definition for connections, a timeout that
ignores traffic.  This timeout will shut down the socket thread from the
side.  The problem is that the client (vchkpw and friends) do not
know/understand about this timeout and socket termination so they continue
in ignorate bliss until they try to send to the socket and find that it's no
longer valid - literally "the server has gone away".


And a patch is offered but the version of vpop that I am running already has
that patch installed.


Anyone else have any ideas?

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