[Pdns-users] TCP Connection Thread died because of STL error: Timeout reading data

[Hostmaster Intersat]

Hello.
I have some problems with pdns and pdns-recursor.

Running on CentOS 5.4 i386, pdns version 2.9.22, pdns-recursor version 3.2.

I see a lot of: "TCP Connection Thread died because of STL error: 
Timeout reading data" error messages in the pdns log.

Also, for our mail server, I have a lot of error messages in the 
postqueue, like:
Host or domain name not found. Name service error for name=yahoo.com 
type=MX: Host not found, try again

If I use dig, with a syntax like "dig yahoo.com mx", sometimes I get the 
"truncated" message, attempting to TCP and then connection time out.

So, apparently the TCP/IP thread is dying.

Reading the other thread ("Possible tcp listener issue"), I've tried 
setting threads=1 in recursor conf file, but to no use, the error 
message persists.

Could this be related to the "Possible tcp listener issue" maillist 
thread? Or is another problem?

Thank you.