Thunderbird: improper command pipelining after EHLO

[Leander Schäfer]

I couldn't find working solutions for this anomalie on the net. What 
does this mean and does someone know how to fix this?

postfix/smtpd[18757]: improper command pipelining after EHLO from 
unknown[192.168.10.233]: QUIT\r\n


Thanks


Best Regards,
Leander