Hallo, squid-users, I've tried the POP3 authentification with the script "pop3.pl" in "helpers/basic_auth/POP3" (written by Henrik Nordstrom) - it didn't work. Many error messages in /var/log/warn, telling Nov 26 09:14:58 Arktur squid[2157]: Starting Squid Cache version 3.1.8 for i486-slackware-linux-gnu... Nov 26 09:15:06 Arktur squid[2157]: WARNING: basicauthenticator #1 (FD 9) exited Nov 26 09:15:06 Arktur squid[2157]: WARNING: basicauthenticator #2 (FD 11) exited [...] Nov 26 09:15:07 Arktur squid[2157]: WARNING: basicauthenticator #20 (FD 47) exited Nov 26 09:15:07 Arktur squid[2157]: WARNING: basicauthenticator #21 (FD 49) exited Nov 26 09:15:07 Arktur squid[2157]: Too few basicauthenticator processes are running Nov 26 09:15:07 Arktur squid[2157]: The basicauthenticator helpers are crashing too rapidly, need help! Nov 26 09:15:07 Arktur squid[1928]: Exiting due to repeated, frequent failures Changing to squidauth.py (by POP3) or squidauth.py (by IMAP) (see "http://lateral.netmanagers.com.ar/stories/6.html") solved the problem. Maybe you should add the Python scripts in "helpers/basic_auth/POP3". Viele Gruesse! Helmut