I have problem with mail.yahoo.com when I try to logging the yahoo server returm me : "Unfortunately, we are unable to process your request at this time. We apologize for the inconvenience. Please try again later" but in secure mode work fine. Only have this problem with the "standard mode".
I think the problem is with squid because the connection work if I conect direct (no squid-proxy). I'm using transparent proxy with RH 7.3 Thanks in advance Edgardo
