About every 3 or 4 days, my ProFTPD service stops accepting<br>connections with the following message:<br><br>[root@mars proftpd]# ftp localhost<br>Connected to localhost (<a href="http://127.0.0.1">127.0.0.1</a>).<br>220 FTP Server ready.
<br>Name (localhost:root): jdoe<br>500 not understood<br>Login failed.<br>ftp><br><br>I keep on having to restart the service to get it going. Here is the output in debug mode:<br><br><a href="http://mars.domain.com">
mars.domain.com</a> (pluto.domain.com[::ffff:<a href="http://192.168.0.20">192.168.0.20</a>]) - FTP sessionrequested from unknown class<br><a href="http://mars.domain.com">mars.domain.com</a> (pluto.domain.com[::ffff:<a href="http://192.168.0.20">
192.168.0.20</a>]) - AuthOrder in effect, resetting auth module order<br><a href="http://mars.domain.com">mars.domain.com</a> (pluto.domain.com[::ffff:<a href="http://192.168.0.20">192.168.0.20</a>]) - connected - local : ::ffff:
<a href="http://192.168.0.2:21">192.168.0.2:21</a><br><a href="http://mars.domain.com">mars.domain.com</a> (pluto.domain.com[::ffff:<a href="http://192.168.0.20">192.168.0.20</a>]) - connected - remote : ::ffff:<a href="http://192.168.0.20:1745">
192.168.0.20:1745</a><br><a href="http://mars.domain.com">mars.domain.com</a> (pluto.domain.com[::ffff:<a href="http://192.168.0.20">192.168.0.20</a>]) - error setting SO_OOBINLINE: Socket operation on non-socket<br><a href="http://mars.domain.com">
mars.domain.com</a> (pluto.domain.com[::ffff:<a href="http://192.168.0.20">192.168.0.20</a>]) - FTP session opened.<br><a href="http://mars.domain.com">mars.domain.com</a> (pluto.domain.com[::ffff:<a href="http://192.168.0.20">
192.168.0.20</a>]) - dispatching PRE_CMD command '' to mod_tls<br><a href="http://mars.domain.com">mars.domain.com</a> (pluto.domain.com[::ffff:<a href="http://192.168.0.20">192.168.0.20</a>]) - dispatching PRE_CMD command '' to mod_core
<br><a href="http://mars.domain.com">mars.domain.com</a> (pluto.domain.com[::ffff:<a href="http://192.168.0.20">192.168.0.20</a>]) - dispatching PRE_CMD command '' to mod_core<br><a href="http://mars.domain.com">mars.domain.com
</a> (pluto.domain.com[::ffff:<a href="http://192.168.0.20">192.168.0.20</a>]) - dispatching LOG_CMD_ERR command '' to mod_log<br><a href="http://mars.domain.com">mars.domain.com</a> (pluto.domain.com[::ffff:<a href="http://192.168.0.20">
192.168.0.20</a>]) - dispatching PRE_CMD command '' to mod_tls<br><a href="http://mars.domain.com">mars.domain.com</a> (pluto.domain.com[::ffff:<a href="http://192.168.0.20">192.168.0.20</a>]) - dispatching PRE_CMD command '' to mod_core
<br><a href="http://mars.domain.com">mars.domain.com</a> (pluto.domain.com[::ffff:<a href="http://192.168.0.20">192.168.0.20</a>]) - dispatching PRE_CMD command '' to mod_core<br><a href="http://mars.domain.com">mars.domain.com
</a> (pluto.domain.com[::ffff:<a href="http://192.168.0.20">192.168.0.20</a>]) - dispatching LOG_CMD_ERR command '' to mod_log<br><a href="http://mars.domain.com">mars.domain.com</a> (pluto.domain.com[::ffff:<a href="http://192.168.0.20">
192.168.0.20</a>]) - FTP session closed.<br>