Local delivery problem

[mailing at scastagnoli.info]

Hi everyone!
I have a problem with delivery of my local mails.
I download mails from my ISP with fetchmail a pipe them to procmail who calls 
deliver to send mail to cyrus server.
Everything goes all right but the last step: in the $HOME/.procmaillog file I 
receive the following error:

        procmail: Executing 
"/usr/lib/cyrus/bin/deliver,-e,-a,prova,-m,user.prova"
        couldn't connect to lmtpd: Bad file descriptor

I've tried also as root but nothing happens.
Can you suggest something please?

Stefano C.

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