Unable to identify the local socket: Transport endpoint is not connected

[Peter Teunissen <lists@onemanifest.net>]

Hi all,


Since this morning I suddenly get the following error in my log:

oct 20 08:47:47 localhost pure-ftpd: (?@?) [ERROR] Unable to identify  
the local socket: Transport endpoint is not connected

These log entries appear at fixed intervals: at 2,3,47 and 48 minutes  
past the hour.

I didn't change anything to my server this morning. So I'm wondering  
what it could be.

I tried:
1. restarting pure-ftpd, but since it is started from inetd that  
obviously didn't help. :-)
2. I found that I can make a ftp connection to the server, ftp  
someuser@ftp.my.domain works just fine and I'm getting the standard  
welcom text. But once I enter a ls, the connection hangs.
3. I googled for the error message, but found only some unrelated or  
unanswered archived mails.
4. looked into the cron files, because of the regular interval, but  
didn't see anyting strange

I run the standard pure-ftpd package on sarge 3.1 from inetd. Port 21  
is closed on my firewall

Does anyone know what:
- this error message means
- where I should look for the cause
- what could cause them to be in the log at such regular intervals?


TIA

Peter