Hi, I'm running both IMAP and POP servers. Both are using the same authvchpw authentication module by IMAP. I run pop as: /usr/local/bin/tcpserver -v -R 0 pop3 /var/qmail/bin/qmail-popup FQDN \ /home/mail/bin/vchkpw /var/qmail/bin/qmail-pop3d Maildir 2>&1 | /var/qmail/bin/splogger pop3d & I run imap as: /usr/local/bin/tcpserver -v -R 0 imap /usr/local/courier/bin/imapd 2>&1 & However, I'm always having problems making vpopmail and courier-imap work together. (Compiling courier-imap with --with-authvchpw always give me problems), thus I want to use checkpassword for IMAP authentication. This means that I want to install IMAP independent of vpopmail, and use checkpassword for authentication. What's the proper tcpserver syntax to do this? Or, can checkpassword work with authvchkpw? Regards, --mel.