I tried the userdb prefetch / postlogin script method to do some password manipulation, but it doesn't appear to work for me. In particular, I don't think this method works with

userdb {
	driver = passwd-file
	args = /path/to/passwd-file userdb_pw=%w
}

because it doesn't understand arbitrary var=value in the args configuration. Dvoecot seems to accept the entire string as the pathname for a password file. Is there a way to pass the plaintext password to a post-login script using passwd-file userdb?

Before this, I managed password manipulation by process tracing dovecot's auth process read() syscalls and parsing out the user/password from the second buffer argument. Quite a hack but it worked.

Joseph Tam jtam.home@gmail.com