I have problem at a clients end exactly same as described in this http://marc.info/?l=info-cyrus&m=108967188821511&w=2 A pop process blocks at write() for any mail at random. And they start getting pop lock issues I have checked with the customer , there is no IDS on their network Is there any other way I can debug this issue ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html